[1] Osaka Med Ctr Canc & Cardiovasc Dis, Osaka, Japan
[2] Osaka Univ, Grad Sch Med, Suita, Osaka 565, Japan
[3] Tokyo Univ Sci, Tokyo 162, Japan
[4] Natl Canc Ctr, Tokyo, Japan
[5] Kyushu Univ, Grad Sch Med Sci, Res Inst Dis Chest, Fukuoka, Japan
[6] Teikyo Univ, Sch Med, Tokyo, Japan
[7] Sapporo Kosei Gen Hosp, Sapporo, Hokkaido, Japan
[8] Keio Univ, Sch Med, Tokyo 108, Japan
[9] Nagoya City Univ, Grad Sch Med, Nagoya, Aichi, Japan
[10] Nagoya Univ, Grad Sch Med, Nagoya, Aichi 4648601, Japan