1. Divisions of Clinical Laboratory, Tama-Hokubu Medical Center, Tokyo Metropolitan Health and Medical Treatment Corporation
2. Laboratories of Molecular Epidemiology for Infectious Agents, Graduate School of Infection Control Sciences, Kitasato University
3. Internal Medicine, Tama-Hokubu Medical Center, Tokyo Metropolitan Health and Medi cal Treatment Corporation
4. Infectious Diseases, Graduate School of Infection Control Sciences, Kitasato University