- Correspondence to Professor Magnus Simrén, Department of Internal Medicine & Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg SE-41345, Sweden;
- Received 22 May 2015
- Accepted 25 May 2015
- Published in print 1 January 2016.
- Published online 8 December 2015.
- Published first 25 June 2015.
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