1. Department of Pediatrics, Toyohashi Municipal Hospital, Toyohashi, Aichi, Japan
2. Department of Otolaryngology, Toyohashi Municipal Hospital, Toyohashi, Aichi, Japan
3. Department of Pathology, Toyohashi Municipal Hospital, Toyohashi, Aichi, Japan
4. Department of Pediatrics, Mie University Graduate School of Medicine, Tsu, Mie, Japan
5. Department of Clinical Engineering, Suzuka University of Medical Science, Suzuka, Mie, Japan