Margaret Rees is a Medical Gynaecologist and Reader in Reproductive Medicine in the Nuffield Department of Obstetrics and Gynaecology, University of Oxford. Tony Mander is a practising Consultant Gynaecologist, is deputy editor of the Journal of the British Menopause Society and honorary clinical teacher in Obstetrics and Gynaecology at Manchester University. Guest Editor Louis Keith is Emeritus Professor of Obstetrics and Gynecology at the Feinberg School of Medicine, Northwestern University, Chicago.