[1] Department of General Medicine, Juntendo University, School of Medicine, Hongo, Tokyo 113-8421
[2] Department of Infection Control Science, Juntendo University, School of Medicine, Hongo, Tokyo 113-8421
[3] Department of Cardiology, Juntendo University, School of Medicine, Hongo, Tokyo 113-8421
[4] Department of Fisheries, Faculty of Agriculture, Miyazaki University, Miyazaki City