Tsutomu Shinohara*, Naoki Shiota, Motohiko Kume, Norihiko Hamada, Keishi Naruse and Fumitaka Ogushi
* Corresponding author: Tsutomu Shinohara shinoharat@kochi2.hosp.go.jp
BMC Infectious Diseases 2013, 13:12 doi:10.1186/1471-2334-13-12