1. Department of Public Health Acibadem Mehmet Ali Aydinlar University School of Medicine Atasehir Istanbul Turkey
2. National Institutes of Health National Cancer Institute West Bethesda, MD USA
3. Department of Sociology Acibadem Mehmet Ali Aydinlar University School of Arts and Sciences Atasehir Istanbul Turkey
4. Deparment of Family Medicine Acibadem Mehmet Ali Aydinlar University School of Medicine Atasehir Istanbul Turkey