1. Professor of Health Care Management, Educational Faculty of Business and Tourism, Gazi University, Golbasi Kampusu, Ankara, Turkey
2. Assistant Professor of Marketing, College of Business, West Texas A&M University, Canyon, TX, USA. turkandursun@yahoo.com
3. Lecturer, Polatli Vocational School of Health Services, Hacettepe University, Polatli, Ankara, Turkey