1. Christian Medical College; Department of Reproductive Medicine; Ida Scudder Road Vellore Tamil Nadu India 632004
2. Cochrane Belgium; Academic Centre for General Practice; Kapucijnenvoer 33 blok J bus 7001 Leuven Belgium 3000
3. University Hospital Gasthuisberg; Leuven University Fertility Centre; Herestraat 49 Leuven Belgium 3000
4. The Centre for Reproductive & Genetic Health; 256 Gray’s Inn Road London UK WC1X 8LD
5. University Hospital Ghent; Obstetrics and Gynaecology; De Pintelaan 185 Ghent Belgium
6. Monash University; Department of Obstetrics and Gynaecology; 246 Clayton Road Clayton Victoria Australia 3168
7. University Medical Center; Department of Reproductive Medicine and Gynecology; Heidelberglaan 100 Utrecht Netherlands 3584 CX
8. King's College London; Division of Women's Health, Faculty of Life Sciences & Medicine; Strand London UK WC2R 2LS