Cheong JH, Kim GH, Moon JY, Lee BE, Ryu DY, Kim DU, Seo HI, Song GA. Endoscopic ultrasonography in patients with elevated carbohydrate antigen 19-9 of obscure origin. World J Gastrointest Endosc 2013; 5(5): 251-254 [PMID: 23678379 DOI: 10.4253/wjge.v5.i5.251]
Corresponding Author of This Article
Dr. Gwang Ha Kim, MD, Department of Internal Medicine, Pusan National University School of Medicine, and Biomedical Research Institute, Pusan National University Hospital, 1-10, Ami-dong, Seo-gu, Busan 602-739, South Korea. doc0224@pusan.ac.kr
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