 DOI: 10.1097GME.0000000000000742PMID: 27749740Narathorn Suwanvesh; Jittima Manonai; Areepan Sophonsritsuk; Wichai CherdshewasartAuthor Information: Department of Obstetrics Gynaecology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand 