- Correspondence to Dr Bert Callewaert, Center for Medical Genetics, Ghent University Hospital, De Pintelaan 185, 9000 Gent, Belgium;
- Received 31 January 2017
- Revised 3 May 2017
- Accepted 11 May 2017
- Published in print 1 September 2017.
- Published online 22 August 2017.
- Published first 22 July 2017.
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