title: Once validated, always validated?
authors: Center for the Study of Aging and Human Development, Duke University Medical Center, Durham, North Carolina, USA.
authors: Gerda G
authors: GG
authors: Fillenbaum
mesh_terms: D000375:Aging / Q000502:physiology*; D004608:Eligibility Determination; D006801:Humans; D015203:Reproducibility of Results; D012944:Social Support; D012947:Social Work