Conversion surgery for gastric cancer: current status and future perspectives - Itaru Yasufuku; Yusuke Okuma; Syunpei Tonomura; Seito Fujibayashi; Wakana Chikaishi; Masahide Endo; Yuji Hatanaka; Masahiro Fukada; Ryuichi Asai; Yuta Sato; Jesse Yu Tajima; Akitaka Makiyama; et al. (Japanese Journal of Clinical Oncology, 2026)