Koichi Matsuo

A case of primary adenocarcinoma of the third portion of the duodenum resected by laparoscopic and endoscopic cooperating surgery

K. Obama, K. Kami, T. Morimoto, 2015, International journal of surgery case reports.

Feasibility of robotic radical gastrectomy using a monopolar device for gastric cancer

S. Tsunoda, K. Obama, H. Okabe, 2019, Surgery Today.

Usefulness of transanal tube placement for prevention of anastomotic leakage following laparoscopic low anterior resection

K. Obama, K. Kami, T. Morimoto, 2017, Asian journal of endoscopic surgery.

Comparison of Minimally Invasive Surgery with Open Surgery for Remnant Gastric Cancer: A Multi-institutional Cohort Study

S. Tsunoda, K. Obama, T. Nishigori, 2023, Annals of Surgical Oncology.