The Journal of Obstetrics and Gynaecology Research is the official Journal of the Asia and Oceania Federation of Obstetrics and Gynecology and of the Japan Society of Obstetrics and Gynecology and aims to provide a medium for the publication of articles in the fields of obstetrics and gynaecology. The Journal publishes original research articles, review articles, short communications and editorials. Accepted papers become the copyright of the journal. Most material is reviewed by at least two referees expert in the field of the submitted paper.