Radiation and smoking effects on lung cancer incidence among atomic bomb survivors - Egawa, Hiromi.; Funamoto, Sachiyo.; Furukawa, Kyoji.; Kasagi, Fumiyoshi.; Kodama, Kazunori.; Lonn, Stefan.; Mabuchi, Kiyohiko.; Matsuo, Takeshi.; Ozasa, Kotaro.; Preston, Dale L.; Tokuoka, Shoji.; Yonehara, Shuji.