1. Department of Marketing, Faculty of Business, Yarmouk University Irbid, Jordan
2. Visiting Professor, Bridgewater State University, Bridgewater, Massachusetts, The United States of America
3. Fundamental of Nursing, College of Nursing, Al-Qadisiyah University, Al Diwaniyah, Iraq
4. Institute of Public Health-The University of Jordan, Amman, Jordan
5. Honorary Research Fellow-Department of Primary Care and Public Health-Faculty of Medicine-Imperial College London, London, The United Kingdom