1. Ahvaz Jundishapur University of Medical Sciences; Department of Midwifery, Reproductive Health Promotion Research Center; Ahvaz Iran
2. University of British Columbia; Department of Public Health, School of Population and Public Health; 2206 East Mall Vancouver BC Canada VT6 1Z3
3. University Putra Malaysia (UPM); Institute of Tropical Forestry and Forest Products (INTROP); Serdang Selangor Malaysia 43400
4. Mashhad Branch, Islamic Azad University; Department of Medicine; Mashhad Iran
5. Penang Medical College; 33-8-3, Sri York Condominium, Halaman York Penang Malaysia 10450