Yokota , Takashi, Yasou Kunii, Shin Teshima, Yasuo Yamada, Toshihiro Saito, Michinori Takahashi, Shu Kikuchi, and Hidemi Yamauchi. 2010. “Clinicopathologic Prognostic Features in Patients With Gastric Cancer Associated With Esophageal or Duodenal Invasion”. Upsala Journal of Medical Sciences 104 (3). https://doi.org/10.3109/03009739909178965.