aInstitute of Metabolism and Systems Research, University of Birmingham, UK

bDivision of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria

cCentre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners

dDepartment of Endocrinology, Queen Elizabeth Hospital

eNIHR Birmingham Biomedical Research Centre, University of Birmingham and University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK

Correspondence to Dr. Alessandro Prete, MD, PhD, Institute of Metabolism and Systems Research, University of Birmingham, College of Medical and Dental Sciences, IBR Tower, Level 3, Room 337, Birmingham, B15 2TT, UK. e-mail: [email protected]