1. Centre for Reproductive Medicine; St. Bartholomew's Hospital; London UK
2. Fertility and Assisted Reproduction; Homerton University Hospital; Queen Mary University of London; London UK
3. Monash Centre for Health Research and Implementation; Monash University; Clayton Vic. Australia
4. Tommy's National Centre for Miscarriage Research; University of Birmingham; Birmingham UK
5. Women's Health Research Unit; The Blizard Institute; Barts and the London School of Medicine and Dentistry; Queen Mary University of London; London UK