1. King Edward Memorial Hospital for Women; 374 Bagot Road Subiaco WA Australia 6008
2. World Health Organization; UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction (HRP), Department of Reproductive Health and Research; Avenue Appia 20 Geneva Switzerland CH-1211
3. Garvan Institute of Medical Research; Clinical Studies and Epidemiology, Bone Biology Division; 384 Victoria Street Darlinghurst New South Wales Australia NSW 2010
4. Walter Sisulu University, University of the Witwatersrand, Eastern Cape Department of Health; East London South Africa