Unit of Thyroid and Osteo-Metabolic Diseases, University Campus Bio-Medico, Rome, Italy

Maria Vittoria Messina & Paolo Pozzilli

Centre of Immunobiology, Blizard Institute, Barts and The London School of Medicine and Dentistry, University of London, London, UK

Paolo Pozzilli

M.V.M: conceptualization (equal), writing – original draft (equal), review and editing (equal), approval of the final version submitted for publication; PP: conceptualization (equal), writing – original draft (equal), review and editing (equal), approval of the final version submitted for publication.

Correspondence to Paolo Pozzilli.