Francisco Bandeira, MD, PhD, FACEProfessor of Medicine and Chairman, Division of Endocrinology and Diabetes,University of Pernambuco Medical School, Agamenon Magalhaes Hospital,Recife, Brazil.fbandeira@ued-ham.org.br Hossein Gharib, MD, MACE, MACPProfessor of Medicine,Division of Endocrinology,Mayo Clinic College of Medicine,Rochester, USA.gharib.hossein@mayo.edu Luiz Griz MD University of Pernambuco School of MedicineDepartment of MedicineRecife, Brazil Manuel Faria MD Ph.D.University of Maranhao School of MedicineDepartment of MedicineSao Luis, Brazil