Clinical Nutrition ESPEN · 2019 · 14 citations · 31 references
MedicineEndocrinologyGeriatric MedicineGeriatricsGerontologyMicronutrient DeficiencyGeriatric SyndromesVitamin DVitamin D DeficiencyVitamin D DisordersVitamin D MetabolismVitamin D NutritionHypervitaminosis DVitamin D BiomarkersVitamin D InsufficiencyVitamin D Metabolism ImpairmentVitamin D Physiology
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Marshal F. Folstein, Susan E. Folstein, Paul R. McHugh · Journal of Psychiatric Research · 1975 · 86.9K citations
Frailty in Older Adults: Evidence for a Phenotype
Linda P. Fried, Catherine M. Tangen, Jeremy Walston et al. · The Journals of Gerontology Series A · 2001 · 24.5K citations · Full text