[1] Kumamoto Univ, Kumamoto, Japan
[2] Saiseikai Kumamoto Hosp, Kumamoto, Japan
[3] Kumamoto City Hosp, Kumamoto, Japan
[4] Kumamoto City Hosp, Kumamoto, Japan
[5] Kumamoto Reg Med Ctr, Kumamoto, Japan
[6] Kumamoto Med Ctr, Kumamoto, Japan
[7] Shimane Univ, Izumo, Shimane, Japan