1. Faculty of Medicine, Hacettepe University, 06100 Ankara, Turkey
2. Department of Pathology, Hacettepe University Faculty of Medicine, Sıhhiye, 06100 Ankara, Turkey
3. Department of Gastroenterology, Hacettepe University Faculty of Medicine, 06100 Ankara, Turkey
4. Department of Medical Biology, Acibadem University, 34684 Istanbul, Turkey
5. Molecular Pathology Application and Research Center, Hacettepe University, 06100 Ankara, Turkey
6. Tumor Pathology, Cancer Institute, Hacettepe University, 06100 Ankara, Turkey