1. The Department of Internal Medicine, Hyogo Prefectural Awaji Hospital, Sumoto, Hyogo, Osaka, Japan
2. Awaji-Hokudan Public Clinic, Hokudan, Tsuna, Hyogo, Osaka, Japan
3. Primate Research Institute, Kyoto University, Inuyama, Aichi, Osaka, Japan
4. Clinical Laboratory, Osaka, Japan
5. Research Institute, National Cardiovascular Center, Fujishirodai, Suita, Osaka, Japan