- Correspondence to Dr Thorsten Langer, Department for Neuropediatrics and Muscular Diseases, Center for Pediatrics and Adolescent Medicine, University Medical Center Freiburg, 79106 Freiburg, Germany;
- Received April 12, 2015
- Revised February 27, 2016
- Accepted March 5, 2016
- First published June 22, 2016.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.