1. Phase II trial of S-1 as third-line or further chemotherapy in patients with advanced non-small-cell lung cancer
   Seigo Miyoshi et al, 2014, International Journal of Clinical Oncology CrossRef
2. Phase II study of S-1 in patients with previously-treated invasive thymoma and thymic carcinoma: North Japan lung cancer study group trial 1203
   Yoko Tsukita et al, 2020, Lung Cancer CrossRef
3. S-1 monotherapy for previously treated non-small cell lung cancer: A retrospective analysis by age and histopathological type
   YUKI TOMITA et al, 2012, Oncology Letters CrossRef
4. Efficacy of fourth-line chemotherapy in advanced non-small-cell lung cancer
   Fausto Petrelli et al, 2015, Anti-Cancer Drugs CrossRef
5. Predictive role of CYFRA 21-1 for S-1 monotherapy in non-small cell lung cancer patients
   Yusuke Kagawa et al, 2022, Respiratory Investigation CrossRef