RT Journal Article SR Electronic T1 Esophageal carcinoma presented with a skull tumour JF Canadian Journal of Surgery JO CAN J SURG FD Canadian Medical Association SP E215 OP E216 VO 52 IS 5 A1 Chih-Hong Kao A1 Chi-Tun Shang A1 Yi-Chang Lin A1 Yao-Feng Li A1 Yeung-Leung Cheng YR 2009 UL http://canjsurg.ca/content/52/5/E215.abstract