1. Department of Medical Surgical Nursing; Mashhad University of Medical Sciences; Mashhad Iran
2. Department of Nursing Management, School of Nursing and Midwifery; Mashhad University of Medical Sciences; Mashhad Iran
3. Behavioral Sciences Research Center, School of Nursing; Baqiyatallah University of Medical Sciences; Tehran Iran
4. Department of Biostatistics and Epidemiology, School of Health; Mashhad University of Medical Sciences; Mashhad Iran