1. Nursing and Midwifery Care Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
2. School of Nursing and Midwifery, Mashhad University of Medical Sciences, Mashhad, Iran
3. Health Management and Economics Research Center, Health Management Research Institute, Iran University of Medical Sciences, Tehran, Iran
4. School of Nursing, Hubei University of Medicine, Shiyan, China