Joy P. Hinson, BSc, PhD, DSc, FHEA, Professor of Endocrine Science, Dean for Postgraduate Studies, Bart's and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK; Peter Raven, BSc, PhD, MBBS, MRCP, MRCPsych, FHEA, Faculty Tutor (Biomedical Sciences), UCL; Deputy Director of Medical Education, UCL Medical School; Honorary Consultant Psychiatrist, Camden and Islington Mental Health Trust, London, UK and Shern L. Chew, BSc, MD, FRCP, Professor of Endocrine Medicine, Consultant Physician, Bart's and the London School of Medicine and Dentistry, Queen Mary University, London, UK.