[1] Nagasaki Univ, Sch Med, Dept Internal Med 2, Nagasaki 852, Japan
[2] Japanese Red Cross Nagasaki Atom Bomb Hosp, Nagasaki, Japan
[3] Nagasaki Municipal Hosp, Nagasaki, Japan
[4] NHO Nagasaki Med Ctr, Ohmura, Japan
[5] Sasebo Gen Hosp, Sasebo, Japan
[6] Kawasaki Med Sch, Div Resp Dis, Kurashiki, Okayama 70101, Japan
[7] Nagasaki Univ, Grad Sch Biomed Sci, Dept Pharmacotherapeut, Nagasaki 852, Japan