1. Department of Clinical Laboratory, Naga Municipal Hospital, 1282 Uchita, Kinokawa, Wakayama, 649-6414, Japan
2. Department of Neurosurgery Medicine, Naga Municipal Hospital, 1282 Uchita, Kinokawa, Wakayama, 649-6414, Japan
3. Department of Clinical Laboratory, Kobe University Hospital, 7-5-2 Kusunokichou, Chuo-ku, Kobe City, Hyogo, 650-0017, Japan
4. Department of Microbiology, School of Pharmacy, Aichi Gakuin University, 1-100 Kusumoto, Chikusa-ku, Nagoya City, Aichi, 464-8650, Japan