1. A case of primary squamous cell carcinoma of the rectum
   Yoshiyuki SAKAMOTO et al, 2012, Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) CrossRef
2. Concurrent Chemoradiotherapy with S-1 as First-line Treatment for Patients with Oropharyngeal Cancer
   Kayoko OHNISHI et al, 2011, Journal of Radiation Research CrossRef
3. Impact of preoperative chemoradiotherapy using concurrent S-1 and CPT-11 on long-term clinical outcomes in locally advanced rectal cancer
   Kei Kimura et al, 2020, World Journal of Gastrointestinal Oncology CrossRef
4. Long-term outcomes of neoadjuvant-synchronous S-1 plus radiotherapy for locally advanced rectal cancer: a multi-institutional prospective phase II study
   Takahiro Hiratsuka et al, 2018, Journal of the Anus, Rectum and Colon CrossRef