[1] Hamamatsu Univ Sch Med, Dept Internal Med, Div 2, 1-20-1 Handayama,Higashi Ku, Hamamatsu 4313192, Japan
[2] Fujieda Municipal Gen Hosp, Dept Pulm Med, 4-1-11 Surugadai, Fujieda 4268677, Japan
[3] Seirei Mikahahara Gen Hosp, Palliat & Support Care Div, 3453 Mikatahara,Kita Ku, Hamamatsu 4338558, Japan
[4] Natl Hosp Org, Clin Res Ctr, Kinki Chuo Chest Med Ctr, 1180 Nagasone Cho,Kita Ku, Sakai, Osaka 5918555, Japan
[5] Natl Hosp Org Kinki, Chuo Chest Med Ctr, Dept Psychosomat Internal Med, 1180 Nagasone Cho,Kita Ku, Sakai, Osaka 5918555, Japan
[6] Tohoku Univ, Dept Palliat Nursing, Hlth Sci, Grad Sch Med, 2-1 Seiryo Machi,Aoba Ku, Sendai, Miyagi 9808575, Japan
[7] Kobe City Med Ctr Gen Hosp, Dept Resp Med, 2-1-1 Minatojima Minamimachi, Kobe, Hyogo 6500047, Japan
[8] Kobe City Med Ctr West Hosp, Dept Resp Med, 4,2 Chome,Nagata Ku, Kobe, Hyogo 6530013, Japan
[9] Tosei Gen Hosp, Dept Resp Med & Allergy, 160 Nishioiwake Cho, Seto, Aichi 4898642, Japan
[10] Tosei Gen Hosp, Dept Palliat Care Med, 160 Nishioiwake Cho, Seto, Aichi 4898642, Japan