aDivision of Endocrinology, Diabetes, & Metabolism, AMAN Hospital, Doha, Qatar

bDivision of Endocrinology, Diabetes, & Metabolism

cDivision of General Internal Medicine & Health Services Research, Department of Medicine, David Geffen School of Medicine, University of California

dVA Greater Los Angeles Healthcare System, Los Angeles, California, USA

Correspondence to Estelle Everett, MD, MHS, David Geffen School of Medicine, University of California, Los Angeles, 1100 Glendon Ste 850, Los Angeles, CA 90024, USA. Tel: +1 310 267 0625; e-mail: [email protected]