1. Volkan Genc:
Department of Surgery, Ankara University Medical School, Ankara, Turkey.
2. Cemal Ensari:
Department of Surgery, Diskapi Teaching and Research Hospital, Ankara, Turkey.
3. Hakan Kulacoglu:
Department of Surgery, Diskapi Teaching and Research Hospital, Ankara, Turkey.
4. Eren Ersoy:
Department of Surgery, Atatürk Teaching and Research Hospital, Ankara, Turkey.
5. Zafer Ergul:
Department of Surgery, Diskapi Teaching and Research Hospital, Ankara, Turkey.