[1] Neyshabur Univ Med Sci, Sch Nursing & Midwifery, Dept Midwifery, Neyshabur, Iran
[2] Mashhad Univ Med Sci, Social Determinants Hlth Res Ctr, Mashhad, Razavi Khorasan, Iran
[3] Univ Social Welf & Rehabil Sci, Iranian Res Ctr Aging, Tehran, Iran
[4] Mashhad Univ Med Sci, Student Res Comm, Sch Nursing & Midwifery, Dept Midwifery, Mashhad, Razavi Khorasan, Iran