Shigeki Nakamura1
, Katsunori Yanagihara1,2
, Koichi Izumikawa1
, Masafumi Seki1
, Hiroshi Kakeya1
, Yoshihiro Yamamoto1
, Yoshitugu Miyazaki1
, Naofumi Suyama3
and Shigeru Kohno1,4 
1Second Department of Internal Medicine, Nagasaki University Graduate School of Medical Science, Nagasaki, Japan
2Department of Laboratory Medicine, Nagasaki University Graduate School of Medical Science, Nagasaki, Japan
3Nagasaki Municipal Medical Center, Nagasaki, Japan
4Division of Molecular & Clinical Microbiology, Department of Molecular Microbiology & Immunology, Nagasaki University Graduate School of Medical Science, Nagasaki, Japan