Retrospective study on clinical outcomes and safety evaluation of da Vinci robot-assisted laparoscopy and endoscopic cooperative for small gastric stromal tumors resection: preliminary single-center experience - Zhang, Jiawei; Wang, Hongzhi; Fang, Hong; Liu, Yanhong; Zhao, Jia; Wang, Chuntao; Song, Peng; Cao, Lei (Journal of Gastrointestinal Oncology, 2026)