Extensive intraoperative peritoneal lavage (EIPL) for gastric cancer with positive peritoneal lavage and/or stamp cytology: An exploratory phase II study - Gen Tsujio; Masakazu Yashiro; Yuichiro Miki; Kohei Matsuoka; Koji Maruo; Mami Yoshii; Tatsuro Tamura; Katsunobu Sakurai; Takahiro Toyokawa; Naoshi Kubo; Shigeru Lee; Tomohisa Okuno; et al. (PLoS ONE, 2026)