1. Department of Medical Technology, Faculty of Health SciencesKyorin UniversityMitakaTokyoJapan
2. School of Medical Technology, Faculty of Health ScienceGumma Paz UniversityGummaJapan
3. Department of Health and Welfare, Faculty of Health SciencesKyorin UniversityTokyoJapan
4. Department of Obstetrics and GynecologyKanazawa Medical UniversityIshikawaJapan