[1] Univ Tehran Med Sci, Fac Med, Tehran 1416634793, Iran
[2] Johns Hopkins Univ, Sch Med, Dept Med, Div Gen Internal Med, Baltimore, MD 21287 USA
[3] Johns Hopkins Univ, Welch Ctr Prevent Epidemiol & Clin Res, Baltimore, MD 21287 USA
[4] Johns Hopkins Bloomberg Sch Publ Hlth, Dept Hlth Policy & Management, Baltimore, MD 21287 USA
[5] Univ Maryland, Sch Med, Dept Med, Div Endocrinol Diabet & Nutr, Baltimore, MD 21201 USA