Aykan, N. F.; Yalçın, S.; Turhal, N. S.; Özdoğan, M.; Demir, G.; Özkan, M.; Yaren, A.; Camcı, C.; Akbulut, H.; Artaç, M. Epidemiology of Colorectal Cancer in Turkey: A Cross-Sectional Disease Registry Study (A Turkish Oncology Group Trial). Turkish Journal of Gastroenterology 2015, 26, 145-153.