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Seon, Choon Sik, Young Sook Park, Se Hwan Park, Sang Ryol Ryu, Yun Ju Jo, Seong Hwan Kim, Byoung Kwan Son, and Sang Bong Ahn. A Case of Oral-contraceptive Related Ischemic Colitis in Young Woman. The Korean Society of Gastrointestinal Endoscopy, 2011.

Seon, Choon Sik, et al. A Case of Oral-contraceptive Related Ischemic Colitis in Young Woman. The Korean Society of Gastrointestinal Endoscopy, 2011.