title: What is missing in the validation of frailty instruments?
authors.affiliation: Division of Geriatric Medicine and Gerontology, Department of Medicine and the Center on Aging and Health, School of Medicine, The Johns Hopkins University, Baltimore, MD.
authors.forename: Qian-Li
authors.initials: QL
authors.lastname: Xue
authors.affiliation: Division of Geriatric Medicine and Gerontology, Department of Medicine and the Center on Aging and Health, School of Medicine, The Johns Hopkins University, Baltimore, MD.
authors.forename: Ravi
authors.initials: R
authors.lastname: Varadhan
mesh_terms: D000375:Aging; D005260:Female; D016330:Frail Elderly; D015577:Geriatric Assessment / Q000379:methods*; D005853:Geriatrics; D006305:Health Status Indicators; D006801:Humans; D008297:Male