1 School of Clinical Medicine, UNSW Medicine & Health, Division of Obstetrics and Gynaecology, Gynaecological Research and Clinical Evaluation (GRACE) Unit, UNSW & Royal Hospital for Women, Randwick, Australia, and Department of O&G, Westmead Hospital, Sydney, Australia.
2 Faculty of Health Science and Medicine, Bond University, Robina, Australia.
3 School of Clinical Medicine, UNSW Medicine & Health, Division of Obstetrics and Gynaecology, UNSW Sydney, and Gynaecological Research and Clinical Evaluation (GRACE) group, Royal Hospital for Women, Sydney, Australia.