[1] Univ Social Welf & Rehabil Sci, Dept Nursing, Tehran, Iran
[2] Univ Social Welf & Rehabil Sci, Iranian Res Ctr Aging, Dept Nursing, Tehran, Iran
[3] Univ Social Welf & Rehabil Sci, Dept Nursing, Tehran, Iran
[4] Univ Social Welf & Rehabil Sci, Dept Biostat Epidemiol, Tehran, Iran
[5] Babol Univ Med Sci, Fac Hlth, Dept Publ Hlth & Geriatr Hlth, Babol, Iran
[6] Babol Univ Med Sci, Hlth Res Inst, Res Ctr Social Factors Affecting Hlth, Babol, Iran