[1] Kurume Univ, Sch Med, Div Respirol Neurol & Rheumatol, Dept Internal Med, Kurume, Fukuoka, Japan
[2] Japanese Red Cross Med Ctr, Tokyo, Japan
[3] Japanese Red Cross Okayama Hosp, Okayama, Japan
[4] Yokohama Municipal Citizens Hosp, Yokohama, Kanagawa, Japan
[5] Niigata Canc Ctr Hosp, Dept Resp Med, Niigata, Japan
[6] Mitsui Mem Hosp, Tokyo, Japan
[7] Kitasato Univ, Sch Med, Sagamihara, Kanagawa, Japan
[8] Tokyo Natl Hosp, Natl Hosp Org, Tokyo, Japan
[9] Komagome Hosp, Tokyo Metropolitan Canc & Infect Dis Ctr, Dept Thorac Oncol & Resp Med, Tokyo, Japan
[10] Kasumigaura Med Ctr, Tsuchiura, Ibaraki, Japan
[11] Iwate Cent Prefectural Hosp, Morioka, Iwate, Japan
[12] Japanese Red Cross Ise Hosp, Ise, Japan
[13] Tochigi Canc Ctr, Dept Resp Med, Utsunomiya, Tochigi, Japan
[14] Kyushu Med Ctr, Fukuoka, Fukuoka, Japan
[15] Teikyo Univ, Sch Med, Tokyo, Japan
[16] Yokohama Municipal Citizens Hosp, Dept Resp Med & Med Oncol, Yokohama, Kanagawa, Japan