- Correspondence to Dr Kalliopi Sofou, Department of Pediatrics, The Queen Silvia Children’s Hospital, SE-416 85 Gothenburg, Sweden;
- Received 26 June 2017
- Revised 21 September 2017
- Accepted 4 October 2017
- Published in print 8 November 2017.
- Published first 3 November 2017.
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