1. Department of Nursing, College of Health Sciences, University of Sharjah, United Arab Emirates
2. Universitas Binawan, Jakarta, Indonesia
3. Universitas Fort De Kock Bukittinggi Indonesia
4. Faculty of Nursing Universitas Andalas Padang, Indonesia
5. Campbelltown Hospital, School of Medicine, Western Sydney University, Australia
6. Faculty of Medicine Universitas Andalas Padang, Indonesia