Socioeconomic status and cancer screening in Japanese males: Large inequlaity in middle-aged and urban residents 論文 Yoshiharu Fukuda・Keiko Nakamura・Takehito Takano・Hiroyuki Nakao・Hirohisa Imai ·2007-03-01 ·『Environmental Health and Preventive Medicine』 12(2) pp. 90-96 doi:10.1007/bf02898155