-
Shigeru Toyoda
Department of Cardiovascular Medicine, Dokkyo Medical University, Tochigi, Japan
-
Michiaki Masuda
Department of Microbiology, Dokkyo Medical University, Tochigi, Japan
-
Teruo Inoue
Nasu Red Cross Hospital
-
Chuwa Tei
Dokkyo Medical University, Tochigi, Japan