Marital status and non-small cell lung cancer survival: The Lung Cancer Database Project in Japan

Kumi Saito-Nakaya, Naoki Nakaya, Tatsuo Akechi, Masatoshi Inagaki, Mariko Asai, Koichi Goto, Kanji Nagai, Yutaka Nishiwaki, Shoichiro Tsugane, Shin Fukudo, Yosuke Uchitomi