1. University of Groningen, University Medical Center Groningen, Department of Endocrinology, Groningen, The Netherlands
2. University of Groningen, University Medical Center Groningen, Department of Internal Medicine, Groningen, The Netherlands
3. School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
4. University of Leicester, Leicester General Hospital, Leicester, Leicester Diabetes Centre – Bloom, UK
5. University of Groningen, University Medical Center Groningen, Department of Endocrinology, Hanzeplein 1, Groningen, 9713 GZ, The Netherlands