1. Department of Nursing, Arak Branch, Islamic Azad University, Arak, Iran
2. Department of Biostatistics and Epidemiology, School of Health, Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
3. Professorship Quality of Life, Spirituality and Coping, Faculty of Health, Witten/Herdecke University, Witten, Germany
4. Department of Nursing, School of Nursing, Arak University of Medical Sciences, Arak, Iran