- Correspondence to Dr Caroline Diguisto, Maternité Olympe de Gouges, Centre Hospitalier, Regional Universitaire Tours, 2 boulevard Tonnellé 37044, France;
- Received 10 November 2016
- Revised 29 April 2017
- Accepted 2 May 2017
- Published in print 1 November 2017.
- Published online 21 October 2017.
- Published first 30 June 2017.
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