1. Department of Public Health Nursing School of Nursing and Midwifery University of Health and Allied Sciences Ho Ghana
2. Department of Surgery Tamale Teaching Hospital Tamale Ghana
3. Department of Nursing West End University College Accra Ghana
4. Department of Public Health School of Allied Sciences University for Development Studies Tamale Ghana
5. Nursing and Midwifery Training College Tamale Ghana
6. Tehran University of Medical Sciences Tehran Iran