Safe implementation of robotic gastrectomy for gastric cancer under the requirements for universal health insurance coverage: a retrospective cohort study using a nationwide registry database in Japan

Koichi Suda, Hiroyuki Yamamoto, Tatsuto Nishigori, Kazutaka Obama, Yukie Yoda, Makoto Hikage, Susumu Shibasaki, Tsuyoshi Tanaka, Yoshihiro Kakeji, Masafumi Inomata, Yuko Kitagawa, Hiroaki Miyata, Masanori Terashima, Hirokazu Noshiro, Ichiro Uyama