[1] Univ Occupat & Environm Hlth Japan, Inst Ind Ecol Sci, Dept Environm Epidemiol, Kitakyushu, Fukuoka 8078555, Japan
[2] Univ Occupat & Environm Hlth Japan, Sch Med, Dept Immunol & Parasitol, Kitakyushu, Fukuoka 8078555, Japan
[3] Catalan Inst Oncol ICO, WHO Collaborating Ctr Tobacco Control, Dept Canc Epidemiol & Prevent, Tobacco Control Unit, Gran Via Hosp 199-203, Barcelona 08908, Spain
[4] Kitakyushu Publ Hlth Ctr, Kitakyushu, Fukuoka 8028560, Japan
[5] Kikuchi Publ Hlth Ctr, Kikuchi, Kumamoto 8611331, Japan
[6] Univ Occupat & Environm Hlth Japan, Disaster Occupat Hlth Ctr, Inst Ind Ecol Sci, Kitakyushu, Fukuoka 8078555, Japan