1. Kobe City College of Nursing, 3-4 Gakuennishimachi Nishi-ku Kobe-city, Hyogo 651-2103, Japan
2. Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 4-3-11 Takeda, Kofu-city, Yamanashi 400-8511, Japan
3. Department of Gynaecology/Obstetric, Institute of Medicine, Tribhuvan University, Maharajgunj 3, Kathmandu, Nepal