- Correspondence to Dr Rod T Mitchell, MRC Centre for Reproductive Health, University of Edinburgh, The Queen’s Medical Research Institute, Edinburgh, EH16 4TJ, UK;
- Received 16 February 2017
- Revised 3 May 2017
- Accepted 3 May 2017
- Published in print 17 July 2017.
- Published first 6 June 2017.
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