1. Department of Dermatology Education and Research Hospital Sakarya University Sakarya Turkey
2. Department of Dermatology Yenikent State Hospital Sakarya Turkey
3. Department of Dermatology and Venereology School of Medicine Tokat Gaziosmanpaşa University Tokat Turkey
4. Department of Biostatistics Sakarya Medical Faculty Sakarya University Sakarya Turkey