1. Reproductive Physiology Laboratory, St. Bartholomew's School of Medicine & Dentistry, Queen Mary University of London, United Kingdom, Department of Obstetrics and Gynaecology, San Martino Hospital and University of Genoa, Italy, The London Bridge Fertility, Gynaecology, and Genetics Centre, London, United Kingdom, and William Harvey Research Institute, Barts and The London, Queen Mary University of London, United Kingdom