1 The Faculty of Biology, Medicine and Health and Manchester Academic Health Sciences Centre, University of Manchester, UK / Department of Diabetes and Endocrinology, Salford Royal Hospital, Salford, UK.
2 Department of Diabetes, Endocrinology and Metabolic Diseases, Hayatabad Medical Complex, Peshawar, Pakistan.
3 Department of Clinical Biochemistry, Royal Preston Hospital, UK.
4 University of the West Indies, Cavehill Campus Barbados, UK.
5 Department of Clinical Biochemistry, Black Country Pathology Services, Walsall Manor Hospital, Walsall-UK, School of Medicine and Clinical Practice, University of Wolverhampton, Wolverhampton, UK.