1. School of Health Sciences; Tottori University; Yonago Japan
2. Division of Health Sciences; Graduate School of Medical Sciences; Tottori University; Yonago Japan
3. Department of Nursing; The University of Shimane; Izumo Japan
4. Department of Pediatrics; Tsuyama Chuo Hospital; Kawasaki, Tsuyama Japan
5. Department of Pediatrics; Tottori Municipal Hospital; Matoba, Tottori Japan