The Clinicopathological Characteristics of Alpha-Fetoprotein-Producing Adenocarcinoma of the Gastrointestinal Tract—A Single-Center Retrospective Study oleh Xiang-Xing Kong, Xiang-Xing Kong, Xin-Lin Li, Xin-Lin Li, Xin-Lin Li, Yu Tian, Qian-Cheng Ye, Xiao-Ming Xu, Xiao-Ming Xu, Yue Liu, Yue Liu, Qi Yang, Qi Yang, Li-Na Zhang, Li-Na Zhang, Yan-Xia Mei, Yan-Xia Mei, Ji-Hang Wen, Ji-Hang Wen, Qian Xiao, Qian Xiao, Jing-Song Li, Jing-Song Li, Ke-Feng Ding, Ke-Feng Ding, Jun Li, Jun Li