Christoph Lees, MD MRCOG, is Reader in Obstetrics and Fetal Medicine at Imperial College London; Honorary Consultant in Obstetrics and Head of Fetal Medicine at the Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital; Visiting Professor at the Department of Development and Regeneration, Katholieke Universiteit Leuven, Belgium, and Editor-inĀChief of the journal Fetal-Maternal Medicine Reviews. Wilfried Gyselaers, MD Ph.D. is a consultant maternal-fetal physician in the Department of Obstetrics and Gynaecology, Ziekenhuis Oost Limburg and Professor of Maternal Physiology, Hasselt Universiteit, Belgium.