Ian D. Hay, Professor of Medicine, Mayo Clinic College of Medicine, Rochester, MN, USA. A Glasgow graduate, Professor Hay has spent the majority of his career in the USA, winning the Randall G. Sprague Award for Outstanding Achievement as a Subspecialty Trainee in Endocrinology from the Mayo Clinic in 1981. He has been recognised with thirteen awards throughout his career, the latest one being the Prix de la Journee de Medecine Nucleaire from the l'Institut Gustave Roussy, Villejuif, France in 1997. He is also a contributor to Williams’ Textbook of Endocrinology.

John A.H. Wass, Professor of Endocrinology, The Oxford Centre for Diabetes, Endocrinology & Metabolism, Oxford, UK. Current President of the European Federation of Endocrine Societies and President of the Society for Endocrinology (UK). Co-Editor of The Oxford Textbook of Endocrinology and Diabetes (published 2002) and The Oxford Handbook of Endocrinology and Diabetes (published August 2002).