1. Department of Medical Genetics, School of Medicine, Marmara University, 34854 Istanbul, Turkey
2. Department of Medical Genetics, Van Research and Training Hospital, 10300 Van, Turkey
3. Cancer Mechanisms and Biomarkers Research Group, School of Life Sciences, University of Westminster, W1W 6UW London, U.K.
4. Department of Medical Genetics, Istanbul University-Cerrahpasa, Cerrahpasa Faculty of Medicine, 34098 Istanbul, Turkey