[1] North Khorasan Univ Med Sci, Geriatr Care Res Ctr, Sch Med, Dept Midwifery, Bojnurd, Iran
[2] North Khorasan Univ Med Sci, Imam Hassan Hosp, Clin Res Dev Unit, Bojnurd, Iran
[3] North Khorasan Univ Med Sci, Nat Prod & Med Plants Res Ctr, Bojnurd, Iran
[4] North Khorasan Univ Med Sci, Dept Community Med, Bojnurd, Iran
[5] North Khorasan Univ Med Sci, Addict & Behav Sci Res Ctr, Bojnurd, Iran
[6] North Khorasan Univ Med Sci, Student Res Comm, Geriatr Care Res Ctr, Sch Nursing, Bojnurd, Iran