- Correspondence to Dr Tomas S Bexelius, Department of Clinical Science and Education, Karolinska Institutet, Stockholm, Sweden, Forskningscentrum, Sjukhusbacken 10, Södersjukhuset, Stockholm SE-118 46, Sweden;
- Received April 16, 2015
- Revised January 12, 2016
- Accepted January 18, 2016
- First published February 10, 2016.
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