1. Department of Pediatrics, Hyogo Prefectural Amagasaki Medical Center, Amagasaki, Japan
2. Department of Infection Control and Prevention, Graduate School of Medicine/Faculty of Medicine, Osaka University, Suita, Japan
3. Department of Clinical Laboratory, Hyogo Prefectural Amagasaki Medical Center, Amagasaki, Japan
4. Department of Pediatric Cardiology, Hyogo Prefectural Amagasaki Medical Center, Amagasaki, Japan
5. Department of Cardiovascular Surgery, Hyogo Prefectural Amagasaki Medical Center, Amagasaki, Japan
6. Department of Pediatric Infectious Diseases, Hyogo Prefectural Amagasaki Medical Center, Amagasaki, Japan