aSection of Endocrinology, Diabetes, Nutrition & Weight Management, Boston University School of Medicine, Boston, Massachusetts

bDivision of Endocrinology and Metabolism, University of Arkansas for Medical Sciences

cSection of Endocrinology, Central Arkansas Veterans Health System, Little Rock, Arkansas, USA

Correspondence to Spyridoula Maraka, MD, UAMS Medical Center 4301 W. Markham St. Little Rock, AR 72205, USA. Tel: +1 501 686 5130; fax: +1 501 686 8148; e-mail: [email protected]