Departments of Gastrointestinal Surgery and Pathology, Türkiye Yüksek İhtisas Post-Graduate Research and Teaching Hospital, Ankara
2.Departments of Pathology, Türkiye Yüksek İhtisas Post-Graduate Research and Teaching Hospital, Ankara
3.Departments of Microbiology and Clinical Microbiology and General Surgery, Hacettepe University, School of Medicine, Ankara
4.Departments of General Surgery, Hacettepe University, School of Medicine, Ankara