aCenter for Endocrine Tumors, Saint Johns Cancer Institute at Providence Saint Johns Health Center, Santa Monica

bSection of Pediatric Endocrinology, Department of Pediatrics, Yale School of Medicine, New Haven, Connecticut, USA

Correspondence to Melanie Goldfarb, MD, MSc, FACS, FACE, FSSO, Providence Saint John's Cancer Institute, 2200 Santa Monica Blvd., Santa Monica, CA 90404, USA. E-mail: [email protected]