Urushiyama H, Jo T, Yasunaga H, Michihata N, Matsui H, Hasegawa W, Takeshima H, Sakamoto Y, Hiraishi Y, Mitani A, Fushimi K, Nagase T, Yamauchi Y. Oral fluorouracil vs vinorelbine plus cisplatin as adjuvant chemotherapy for stage II-IIIA non-small cell lung cancer: Propensity score-matched and instrumental variable analyses. Cancer Med. 2018 10; 7(10):4863-4869.