1. Fertility and Research Centre, School of Women’s & Children’s Health, University of New South Wales, Sydney, NSW 2052, Australia
2. Centre of Neuroendocrinology and Department of Physiology, School of Biomedical Sciences, University of Otago, Dunedin 9054, New Zealand
3. Department of Behavioural Neuroscience, School of Psychology, University of New South Wales, Sydney, NSW 2052, Australia
4. Andrology Laboratory, ANZAC Research Institute, University of Sydney, Concord Hospital, NSW 2139, Australia
5. Department of Pediatrics, University of Michigan, Ann Arbor, MI 48109, USA
6. Medical Research Council Centre for Reproductive Health, University of Edinburgh, Edinburgh EH16 4TJ, UK