Consultant Endocrinologist
King's College Hospital NHS Foundation Trust
London
UK
JG declares that she has no competing interests.
Dr Jacqueline Gilbert would like to gratefully acknowledge Dr Rasa Zarnegar, a previous contributor to this topic.
Assistant Professor
Department of Endocrine Surgery
Columbia University
New York
NY
JL declares that he has no competing interests.
Director of Clinical Endocrinology
Beth Israel Deaconess Medical Center
Boston
MA
JVH declares that he has no competing interests.
Sir Arthur Hall Professor of Medicine/Pro Vice Chancellor
University of Sheffield
Sheffield
UK
AW declares that he has no competing interests.
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