Department of Endocrinology and Diabetes and Metabolism (P.M.), 251 Hellenic Air Force and VA General Hospital, 11525 Athens, Greece; School of Medicine (S.A.P.), Aristotle University of Thessaloniki, 54642 Thessaloniki, Greece; Department of Endocrinology (A.D.A.), 424 General Military Hospital, 56429 Thessaloniki, Greece.