Houston DK, Neiberg RH, Tooze JA, Hausman DB, Johnson MA, Cauley JA, Bauer DC, Shea MK, Schwartz GG, Williamson JD, Harris TB, Kritchevsky SB. Low 25-hydroxyvitamin D predicts the onset of mobility limitation and disability in community-dwelling older adults: the Health ABC Study. J Gerontol A Biol Sci Med Sci. 2013;68(2):181-187.

Cohen AD, Mowrey W, Weissfeld LA, Aizenstein HJ, McDade E, Mountz JM, Nebes RD, Saxton JA, Snitz B, Dekosky S, Williamson J, Lopez OL, Price JC, Mathis CA, Klunk WE. Classification of amyloid-positivity in controls: comparison of visual read and quantitative approaches. Neuroimage. 2013;71():207-215.

Callahan K, Feiereisel KB, Williamson J, Watkins FS, Atkinson HH. A three-year competency-based geriatrics curriculum for internal medicine residents [abstract]. J Am Geriatr Soc. 2012;60(4 Suppl):S207-S208.

Demons JL, Tooze JA, Davis BR, Shertzer-Skinner R, Kearsley L, Gottlieb R, Williamson JD, Houston DK. Vitamin D deficiency is associated with fall-related risk factors in home-bound older adults [abstract]. J Am Geriatr Soc. 2012;60(4 Suppl):S199.

Houston DK, Tooze JA, Demons JL, Davis B, Shertzer-Skinner R, Kearsley L, Gottlieb R, Williamson JD. Improving 25-hydroxyvitamin D status in home-bound elders and its effect on falls [abstract]. J Am Geriatr Soc. 2012;60(Suppl 4):S9.

Wilson V, Neiberg R, Tooze JA, Sink KM, Shea K, Williamson J, Kitzman DW, Hausman DB, Cauley J, Bauer D, Harris T, Kritchevsky SB, Houston DK. 25-hydroxyvitamin D and cardiovascular disease in the Health ABC Study [abstract]. J Am Geriatr Soc. 2012;60(Suppl 4):S89.

Houston DK, Tooze JA, Demons J, Davis B, Shertzer-Skinner R, Kearsley L, Gottlieb R, Williamson J. Improving vitamin D status in home-bound elders [abstract]. FASEB J. 2012;26(Meeting Abstracts):245.3.

Punthakee Z, Miller ME, Launer LJ, Williamson JD, Lazar RM, Cukierman-Yaffee T, Seaquist ER, Ismail-Beigi F, Sullivan MD, Lovato LC, Bergenstal RM, Gerstein HC. Poor cognitive function and risk of severe hypoglycemia in type 2 diabetes: post hoc epidemiologic analysis of the ACCORD trial. Diabetes Care. 2012;35(4):787-793.

Hugenschmidt CE, Blocker JN, Williamson JD, Nicklas BJ. Preliminary associations between cognition and glucose regulation in obese elderly at risk for type 2 diabetes [abstract]. Diabetes. 2012;61(Suppl 1):A185.

Ding J, Lovato J, Hugenschmidt CE, Ambrosius W, Horowitz K, Bryan RN, Greven C, Gerstein HC, Lazer R, Murray A, Thomas A, Launer L, Williamson J. Retinopathy in relation to cerebral ischemic lesion and cognitive decline in older patients with type 2 diabetes [abstract]. Diabetes. 2012;61(Suppl 1A):LB2.

Messier SP, DeVita P, Nicklas BJ, Beavers D, Mihalko S, Miller GD, Lyles M, Hunter DJ, Eckstein F, Legault C, Williamson JD, Carr JJ, Loeser RF. The Intensive Diet and Exercise for Arthritis Trial (IDEA): effects on knee joint loading and inflammation [abstract]. Osteoarthritis Cartilage. 2012;20(Suppl 1):S28.

Bettermann K, Arnold AM, Williamson J, Rapp S, Sink K, Toole JF, Carlson MC, Yasar S, Dekosky S, Burke G.. Statins, risk of dementia, and cognitive function: secondary analysis of the ginkgo evaluation of memory study. J Stroke Cerebrovasc Dis. 2012;21(6):436-444.

Brenes GA, Miller ME, Williamson JD, McCall WV, Knudson M, Stanley MA. A randomized controlled trial of telephone-delivered cognitive-behavioral therapy for late-life anxiety disorders. Am J Geriatr Psychiatry. 2012;20(8):707-716.

Hunter DJ, Beavers D, Eckstein F, Guermazi A, Loeser RF, Nicklas BJ, Mihalko S, Miller GD, Lyles M, DeVita P, Legault C, Carr JJ, Williamson JD, Messier SP. The Intensive Diet and Exercise for Arthritis Trial (IDEA): 18-month radiographic and MRI outcomes [abstract]. Arthritis Rheum. 2012;64(10 Suppl):S1070.

Houston DK, Tooze JA, Neiberg RH, Hausman DB, Johnson MA, Cauley JA, Bauer DC, Cawthon PM, Shea MK, Schwartz GG, Williamson JD, Tylavsky FA, Visser M, Simonsick EM, Harris TB, Kritchevsky SB. 25-hydroxyvitamin D status and change in physical performance and strength in older adults: the Health, Aging, and Body Composition Study. Am J Epidemiol. 2012;176(11):1025-1034.

Hughes TM, Lopez OL, Kamboh M, Klunk WE, Williamson J, Kuller LH. Markers of cholesterol transport are associated with amyloid deposition in the brain (CNS) [abstract]. Gerontologist. 2012;52(Suppl 1):453-454.

Nocera J, Yaffe K, Simonsick EM, Williamson J, Newman AB, Caserotti P, Harris T, Shorr RI. Evaluation of brain-derived neurotrophic factor and physical function in older adults from the Health ABC study [abstract]. Gerontologist. 2012;52(Suppl 1):508.

Houston DK, Tooze JA, Neiberg RH, Hausman DB, Johnson MA, Cauley JA, Bauer DC, Schwartz GG, Williamson JD, Kritchevsky SB, et al. Serum 25-hydroxyvitamin D and recurrent falls: the Health ABC Study [abstract]. J Am Geriatr Soc. 2011;59(Suppl 1):S14.

Callahan K, Gottlieb R, Applegate W, Atkinson H, Watkins F, Williamson J. Older adults receiving community-based services demonstrate high hospital utilization rates [abstract]. J Am Geriatr Soc. 2011;59(Suppl 1):S187-S188.

Demons JL, Sink KM, Applegate WB, Davis BR, Lambros MA, Lawlor JS, Williamson JD. Early outcomes of a novel senior mentor program utilizing Meals on Wheels volunteers [abstract]. J Am Geriatr Soc. 2011;59(Suppl 1):S85.

Omlor RL, Watkins FS, Lovato JF, Williamson JD. Self-reported childhood learning difficulties and incidence of dementia [abstract]. J Am Geriatr Soc. 2011;59(Suppl 1):S32.

Watkins FS, Williamson JD, High KP, Podrazik PM, Atkinson HH. Impact of a geriatrics-based faculty development program for subspecialists in internal medicine [abstract]. J Am Geriatr Soc. 2011;59(Suppl 1):S82.

Inzitari M, Arnold AM, Patel KV, Mercer LD, Karlamangla A, Ding J, Psaty BM, Williamson JD, Kuller LH, Newman AB. Subclinical vascular disease burden and risk for death and cardiovascular events in older community dwellers. J Gerontol A Biol Sci Med Sci. 2011;66(9):986-993.

Butler SG, Stuart A, Wilhelm E, Rees C, Williamson J, Kritchevsky S. The effects of aspiration status, liquid type, and bolus volume on pharyngeal peak pressure in healthy older adults. Dysphagia. 2011;26(3):225-231.

Murray AM, Barzilay JI, Lovato JF, Williamson JD, Miller ME, Marcovina S, Launer LJ. Biomarkers of renal function and cognitive impairment in patients with diabetes. Diabetes Care. 2011;34(8):1827-1832.

Hugenschmidt C, Hayasaka S, Langefeld C, Freedman B, Carr JJ, Williamson J, Bowden DW. Cognitive performance is related to vascular disease and diabetes in a family study of type 2 diabetes [abstract]. Diabetes. 2011;60(Suppl 1):A225-A226.

Casanova R, Whitlow CT, Wagner B, Williamson J, Shumaker SA, Maldjian JA, Espeland MA. High dimensional classification of structural MRI Alzheimer's disease data based on large scale regularization. Front Neuroinform. 2011;5():article 22.

Espeland MA, Miller ME, Goveas JS, Hogan PE, Coker LH, Williamson J, Naughton M, Resnick SM. Cognitive function and fine motor speed in older women with diabetes mellitus: results from the Women's Health Initiative Study of Cognitive Aging. J Womens Health. 2011;20(10):1435-1443.

Butler SG, Maslan J, Stuart A, Leng X, Wilhelm E, Lintzenich CR, Williamson J, Kritchevsky SB. Factors influencing bolus dwell times in healthy older adults assessed endoscopically. Laryngoscope. 2011;121(12):2526-2534.

Klepin HD, Geiger AM, Tooze JA, Kritchevsky SB, Williamson JD, Ellis LR, Levitan D, Pardee TS, Isom S, Powell BL. The feasibility of inpatient geriatric assessment for older adults receiving induction chemotherapy for acute myelogenous leukemia. J Am Geriatr Soc. 2011;59(10):1837-1846.

Launer LJ, Miller ME, Williamson JD, Lazar RM, Gerstein H, Ding J, Lovato LC, Lovato J, Coker L, Maldjian J, et al. Effects of intensive glucose lowering on brain structure and function in people with type 2 diabetes (ACCORD MIND): a randomised open-label substudy. Lancet Neurol. 2011;10(11):969-977.

Messier SP, Nicklas BJ, Legault C, Mihalko S, Miller GD, DeVita P, Lyles M, Hunter DJ, Eckstein F, Williamson JD, Carr JJ, Loeser RF. The Intensive Diet and Exercise for Arthritis Trial: 18-month clinical outcomes [abstract]. Arthritis Rheum. 2011;63(10 Suppl):S281.

Fielding RA, Rejeski WJ, Blair S, Church T, Espeland MA, Gill TM, Guralnik JM, Hsu F-C, Katula J, King AC, Kritchevsky SB, McDermott MM, Miller ME, Nayfield S, Newman AB, Williamson JD, Bonds D, Romashkan S, Hadley E, Pahor M. The Lifestyle Interventions and Independence for Elders Study: design and methods. J Gerontol A Biol Sci Med Sci. 2011;66(11):1226-1237.

Espeland MA, Miller ME, Goveas JS, Hogan PE, Coker LH, Williamson J, Naughton M, Resnick SM. Domain-specific cognitive function and fine motor speed in women 65 years and older with type 2 diabetes mellitus: results from the Women's Health Initiative Study of Cognitive Aging [abstract]. Diabetes. 2011;60(Suppl 1):A69-A70.

Metti AL, Cauley JA, Ayonayon HN, Rosano C, Williamson J, Harris TB, Yaffe K. The demographic and medical correlates of plasma A beta 42 and A beta 42/A beta 40 [abstract]. Gerontologist. 2011;51(Suppl 2):163.

Brenes GA, McCall WV, Williamson JD, Stanley MA. Feasibility and acceptability of bibliotherapy and telephone sessions for the treatment of late-life anxiety disorders. Clin Gerontol. 2010;33(1):62-68.

Kuller LH, Margolis KL, Gaussoin SA, Bryan NR, Kerwin D, Limacher M, Wassertheil-Smoller S, Williamson J, Robinson JG. Relationship of hypertension, blood pressure, and blood pressure control with white matter abnormalities in the Women's Health Initiative Memory Study (WHIMS)-MRI Trial. J Clin Hypertens (Greenwich). 2010;12(3):203-212.

Venkatraman VK, Aizenstein H, Guralnik J, Newman AB, Glynn NW, Taylor C, Studenski S, Launer L, Pahor M, Williamson J, et al. Executive control function, brain activation and white matter hyperintensities in older adults. Neuroimage. 2010;49(4):3436-3442.

Brinkley TE, Lovato JF, Arnold AM, Furberg CD, Kuller LH, Burke GL, Nahin RL, Lopez OL, Yasar S, Williamson JD. Effect of Ginkgo biloba on blood pressure and incidence of hypertension in elderly men and women. Am J Hypertens. 2010;23(5):528-533.

Atkinson HH, Rapp SR, Williamson JD, Lovato J, Absher JR, Gass M, Henderson VW, Johnson KC, Sink KM, Espeland MA, et al. The relationship between cognitive function and physical performance in older women: results from the Women's Health Initiative Memory Study. J Gerontol A Biol Sci Med Sci. 2010;65(3):300-306.

Mohanty JG, Shukla HD, Williamson JD, Launer LJ, Saxena S, Rifkind JM. Alterations in the red blood cell membrane proteome in alzheimer's subjects reflect disease-related changes and provide insight into altered cell morphology. Proteome Sci. 2010;8():article 11.

Rosano C, Venkatraman VK, Guralnik J, Newman AB, Glynn NW, Launer L, Taylor CA, Williamson J, Studenski S, Pahor M, et al. Psychomotor speed and functional brain MRI 2 years after completing a physical activity treatment. J Gerontol A Biol Sci Med Sci. 2010;65(6):639-647.

Atkinson HH, Watkins FS, High KP, Lawlor JS, Lambros A, Williamson JD. Comparison of trainee, peer, and self ratings of geriatrics teaching: a videotaped observed teaching exercise [abstract]. J Am Geriatr Soc. 2010;58(Suppl 1):39-40.

Butler SG, Stuart A, Leng X, Rees C, Williamson J, Kritchevsky SB. The association between aspiration status and tongue and handgrip strength in healthy older adults [abstract]. J Am Geriatr Soc. 2010;58(Suppl 1):132.

Butler SG, Stuart A, Leng X, Rees C, Williamson J, Kritchevsky SB. Factors influencing aspiration during swallowing in healthy older adults. Laryngoscope. 2010;120(11):2147-2152.

Butler SG, Stuart A, Leng I, Rees C, Williamson J, Kritchevsky S. The effect of aspiration status on tongue and handgrip strength in healthy older adults [abstract]. Dysphagia. 2010;25(4):360.

Butler SG, Stuart A, Leng I, Rees C, Williamson J, Kritchevsky S. Benchmark data for flexible endoscopic evaluation of swallowing [abstract]. Dysphagia. 2010;25(4):373.

Bowden DW, Cox AJ, Freedman BI, Hugenschimdt CE [sic] [Hugenschmidt CE], Wagenknecht LE, Herrington D, Agarwal S, Register TC, Maldjian JA, Ng MC-Y, Hsu F-C, Langefeld CD, Williamson JD, Carr JJ. Review of the Diabetes Heart Study (DHS) family of studies: a comprehensively examined sample for genetic and epidemiological studies of type 2 diabetes and its complications. Rev Diabet Stud. 2010;7(3):188-201.

Klepin HD, Tooze JA, Geiger AM, Kritchevsky S, Williamson J, Ellis LR, Levitan D, Pardee T, Isom S, Powell BL. Geriatric assessment predicts overall survival among older adults receiving induction chemotherapy for acute myelogenous leukemia [abstract]. Blood. 2010;116(21):653-654.

Brenes GA, Miller ME, McCall V, Knudson M, Williamson J, Stanley M. Recruitment of anxious older adults into an RCT of psychotherapy [abstract]. Am J Geriatr Psychiatry. 2010;18(3 Suppl 1):S64-S65.

Brenes GA, Miller ME, Stanley MA, Williamson JD, Knudson M, McCall V. Insomnia in older adults with generalized anxiety disorder [abstract]. Am J Geriatr Psychiatry. 2009;17(3 Suppl 1):A57.

Cukierman-Yaffe T, Gerstein HC, Williamson JD, Lazar RM, Lovato L, Miller ME, Coker LH, Murray A, Sullivan MD, Marcovina SM, et al. Relationship between baseline glycemic control and cognitive function in individuals with type 2 diabetes and other cardiovascular risk factors: the Action to Control Cardiovascular Risk in Diabetes-Memory in Diabetes (ACCORD-MIND) trial. Diabetes Care. 2009;32(2):221-226.

Brenes GA, Miller ME, Stanley MA, Williamson JD, Knudson M, McCall WV. Insomnia in older adults with generalized anxiety disorder. Am J Geriatr Psychiatry. 2009;17(6):465-472.

Mangieri DA, Williamson J, Lovato J, Fitzpatrick A, Atkinson H, Saxton J, Rapp S, Carlson M, DeKosky S, Sink K, et al. Moderate alcohol intake is associated with lower dementia incidence: results from the Ginkgo Evaluation of Memory Study (GEMS) [abstract]. J Am Geriatr Soc. 2009;57(Suppl 1):S69-S70.

Williamson JD, Espeland M, Kritchevsky SB, Newman AB, King AC, Pahor M, Guralnik JM, Pruitt LA, Miller ME. Changes in cognitive function in a randomized trial of physical activity: results of the Lifestyle Interventions and Independence for Elders pilot study. J Gerontol A Biol Sci Med Sci. 2009;64(6):688-694.

Bowen BE, Williamson J, Lovato J, Fitzpatrick A, Carlson M, Sink K, Luchsinger J, Furberg C, Demons J. Late-life measures of adiposity and the incidence of dementia [abstract]. J Am Geriatr Soc. 2009;57(Suppl 1):S55.

Sevick MA, Miller GD, Loeser RF, Williamson JD, Messier SP. Cost-effectiveness of exercise and diet in overweight and obese adults with knee osteoarthritis. Med Sci Sports Exerc. 2009;41(6):1167-1174.

Sink KM, Leng X, Williamson J, Kritchevsky SB, Yaffe K, Kuller L, Yasar S, Atkinson H, Robbins M, Goff DC Jr, et al. Angiotensin-converting enzyme inhibitors and cognitive decline in older adults with hypertension: results from the Cardiovascular Health Study. Arch Intern Med. 2009;169(13):1195-1202.

Messier SP, Legault C, Mihalko S, Miller GD, Loeser RF, DeVita P, Lyles M, Eckstein F, Williamson JD, Nicklas BJ, et al. The Intensive Diet and Exercise for Arthritis (IDEA) trial: design and rationale. BMC Musculoskelet Disord. 2009;10():article 93.

Margolis KL, Dunn K, Simpson LM, Ford CE, Williamson JD, Gordon DJ, Einhorn PT, Probstfield JL. Coronary heart disease in moderately hypercholesterolemic, hypertensive black and non-black patients randomized to pravastatin versus usual care: the Antihypertensive and Lipid Lowering to Prevent Heart Attack Trial (ALLHAT-LLT). Am Heart J. 2009;158(6):948-955.

Butler SG, Stuart A, Williamson J, Kritchevsky S, Case D, Rees C. Swallowing dysfunction is unrecognized in community-dwelling older adults [abstract]. Gerontologist. 2009;49(Suppl 2):173.

Klepin HD, Geiger AM, Williamson J, Kritchevsky S, Tooze JA, Ellis LR, Levitan D, Isom S, Powell BL. Inpatient geriatric assessment detects impairment among older adults receiving induction chemotherapy for acute myelogenous leukemia [abstract]. Blood. 2009;114(22):570-571.

Williamson JD, Vellas B, Furberg C, Nahin R, Dekosky ST. Comparison of the design differences between the Ginkgo Evaluation of Memory Study and the GuidAge Study. J Nutr Health Aging. 2008;12(1):73S-79S.

Brenes GA, Knudson M, McCall V, Williamson J, Miller M, Stanley MA. Age and racial differences in the presentation and treatment of generalized anxiety disorder in primary care [abstract]. Am J Geriatr Psychiatry. 2008;16(3 Suppl 1):A88-A89.

Atkinson HH, Williamson JD, Rapp SR, Lovato J, Sink KM, Absher JR, Gass M, Henderson V, Johnson KC, Espeland MA, et al. Grip strength predicts dementia in 75 to 80 year-old women: the Women's Health Initiative Memory Study (WHIMS) [abstract]. J Am Geriatr Soc. 2008;56(4 Suppl):S107.

Heringer L, Lovato J, Demons J, Williamson J. Long-term care volunteers: impact of significant prior relationships with older people and volunteer experience on student attitudes [abstract]. J Am Geriatr Soc. 2008;56(4 Suppl):S91.

Sink KM, Lovato J, Williamson J, Atkinson H, Carlson MC, Lopez O, Nahin R, DeKosky ST, Goff D. Anticholinergic burden is associated with worse physical function: the Ginkgo Evaluation of Memory Study (GEMS) [abstract]. J Am Geriatr Soc. 2008;56(4 Suppl):S11.

Brenes GA, Knudson M, McCall WV, Williamson JD, Miller ME, Stanley MA. Age and racial differences in the presentation and treatment of Generalized Anxiety Disorder in primary care. J Anxiety Disord. 2008;22(7):1128-1136.

Coker LH, Felton D, Andrews LA, Tooze J, Lovato J, Lovato L, Woolard N, Williamson J, Lazar RM, Miller M, et al. Quality assurance of cognitive outcomes in a randomized clinical trial: the Action to Control Cardiovascular Risk in Diabetes--Memory in Diabetes (ACCORD-MIND) trial [abstract]. Clin Trials. 2008;5(4):399-400.

DeKosky ST, Williamson JD, Fitzpatrick AL, Kronmal RA, Ives DG, Saxton JA, Lopez OL, Burke G, Wollard NF, Furberg CD, et al. Ginkgo biloba for prevention of dementia: a randomized controlled trial. JAMA. 2008;300(19):2253-2262.

Inzitari M, Arnold A, Patel K, Karlamangla A, Ding J, Psaty B, Williamson J, Fried L, Kuller L, Newman A. Vascular disease burden and risk of death in older community-dwellers [abstract]. Gerontologist. 2008;48(Special Issue 3):698.

Brenes GA, Williamson JD, Messier SP, Rejeski WJ, Pahor M, Ip E, Penninx BWJH. Treatment of minor depression in older adults: a pilot study comparing sertraline and exercise. Aging Ment Health. 2007;11(1):61-68.

Sink KM, Leng X, Williamson J, Kritchevsky S, Yaffe K, Psaty B, Kuller L, Yasar S, Atkinson H, Robbins M, Goff D. Centrally active ACE inhibitors may slow cognitive decline: the Cardiovascular Health Study [abstract]. J Am Geriatr Soc. 2007;55(4 Suppl 1):S14.

Williamson JD, Miller ME, Bryan N, Lazar RM, Coker LH, Johnson J, Cukierman T, Horowitz KR, Murray A, Launer LJ. The Action to Control Cardiovascular Risk in Diabetes Memory in Diabetes Study (ACCORD-MIND): rationale, design, and methods. Am J Cardiol. 2007;99(12 Suppl):112i-122i.

Atkinson HH, Rosano C, Simonsick EM, Williamson JD, Davis C, Ambrosius WT, Rapp SR, Cesari M, Newman AB, Kritchevsky SB, et al. Cognitive function, gait speed decline, and comorbidities: the Health, Aging and Body Composition Study. J Gerontol A Biol Sci Med Sci. 2007;62(8):844-850.

Kingry C, Bastien A, Booth G, Geraci TS, Kirpach BR, Lovato LC, Margolis KL, Rosenberg Y, Sperl-Hillen JM, Williamson JD, et al. Recruitment strategies in the Action to Control Cardiovascular Risk in Diabetes (ACCORD) trial. Am J Cardiol. 2007;99(12A Suppl):68i-79i.

Messier SP, Mihalko S, Loeser RF, Legault C, Jolla J, Pfruender J, Prosser B, Adrian A, Williamson JD. Glucosamine/chondroitin combined with exercise for the treatment of knee osteoarthritis: a preliminary study. Osteoarthritis Cartilage. 2007;15(11):1256-1266.

Macdiarmid S, Gwynn E, Cesari M, Williamson J. Evaluation of incontinence and disability in community-dwelling older women [abstract]. Neurourol Urodyn. 2007;26(7 Suppl):1064-1065.

Fitzpatrick AL, Buchanan CK, Nahin RL, DeKosky ST, Atkinson HH, Carlson MC, Williamson JD. Associations of gait speed and other measures of physical function with cognition in a healthy cohort of elderly persons. J Gerontol A Biol Sci Med Sci. 2007;62(11):1244-1251.

Herringer LK, Williamson JD, Lovato J, Demons J. Impact of significant prior relationship with older people on long-term care volunteer attitudes [abstract]. Gerontologist. 2007;47(Special Issue 1):532.

Demons JL, Adami J, Furberg CD, Williamson JD. Assessing costs of urinary incontinence care in long term care residents [abstract]. Gerontologist. 2007;47(Special Issue I):467.

Nahin RL, Fitzpatrick AL, Williamson JD, Burke GL, DeKosky ST, Furberg C. Use of herbal medicine and other dietary supplements in community-dwelling older people: baseline data from the Ginkgo Evaluation of Memory Study. J Am Geriatr Soc. 2006;54(11):1725-1735.

Fitzpatrick AL, Fried LP, Williamson J, Crowley P, Posey D, Kwong L, Bonk J, Moyer R, Chabot J, Furberg CD, et al. Recruitment of the elderly into a pharmacologic prevention trial: the Ginkgo Evaluation of Memory Study experience. Contemp Clin Trials. 2006;27(6):541-553.