title: Urgent need of vitamin D supplementation among Iranian elderly: a cross-sectional study.
authors.affiliation: Department of Community Nutrition, School of Nutritional Sciences and Dietetics, School of Public Health and Institute of Public Health Research, Tehran University of Medical Sciences, Tehran, 6446-14155, Iran.
authors.forename: Rezvan
authors.initials: R
authors.lastname: Hashemi
authors.affiliation: Department of Community Nutrition, School of Nutritional Sciences and Dietetics, School of Public Health and Institute of Public Health Research, Tehran University of Medical Sciences, Tehran, 6446-14155, Iran.
authors.forename: Sakineh Shab
authors.initials: SS
authors.lastname: Bidar
authors.affiliation: Department of Community Nutrition, School of Nutritional Sciences and Dietetics, School of Public Health and Institute of Public Health Research, Tehran University of Medical Sciences, Tehran, 6446-14155, Iran.
authors.forename: Moloud
authors.initials: M
authors.lastname: Payab
authors.affiliation: Department of Community Nutrition, School of Nutritional Sciences and Dietetics, School of Public Health and Institute of Public Health Research, Tehran University of Medical Sciences, Tehran, 6446-14155, Iran.
authors.forename: Ahmad Reza
authors.initials: AR
authors.lastname: Dorosty-Motlagh