1. Department of Diabetes and Endocrinology, University of Manchester, Salford Royal Hospitals University Trust, Hope Hospital, Stott Lane, Salford, Greater Manchester M6 8HD, UK; Department of Medicine, Bishop Auckland General Hospital, Bishop
Auckland Co., Durham DL14 6AD, UK
2. Department of Medicine, Bishop Auckland General Hospital, Bishop Auckland Co., Durham DL14 6AD, UK
3. SAS Peptide Section, Clinical Laboratory, Royal Surrey County Hospital, Guildford, Surrey GU2 7XX, UK