Phase I study of neoadjuvant chemoradiotherapy with S-1 for clinically resectable type 4 or large type 3 gastric cancer in elderly patients aged 75 years and older (OGSG1303). - Shinkai M; Imano M; Yokokawa M; Matsuyama J; Kimura Y; Shimokawa T; Kawakami H; Satoh T; Yasuda T; Furukawa H (Medical oncology (Northwood, London, England), 2024)