[1] Shahid Beheshti Univ Med Sci, Sch Nursing & Midwifery, Student Res Comm, Nursing, Tehran, Iran
[2] Shahid Beheshti Univ Med Sci, Sch Nursing & Midwifery, Dept Med Surg Nursing, Tehran, Iran
[3] Univ Tehran Med Sci, Nursing & Midwifery Care Res Ctr, Sch Nursing & Midwifery, Tehran, Iran
[4] Univ Tehran Med Sci, Dept Spiritual Hlth, Res Ctr Quran Hadith & Med, Tehran, Iran
[5] Marie Cederschiold Hgsk, Palliat Care Ctr, Dept Hlth Care Sci, Campus Ersta, Stockholm, Sweden
[6] Shahid Beheshti Univ Med Sci, Sch Nursing & Midwifery, Dept Community Hlth Nursing, Tehran, Iran