Gastrointestinal Malabsorption of Thyroxine

[1 ]Endocrinology Unit, Department of Medico-Surgical Sciences and Biotechnologies, “Sapienza” University of Rome, Latina, Italy

[2 ]Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy

[3 ]Endocrinology Unit, AUSL Latina, Latina, Italy

[4 ]Department of Clinical and Experimental Medicine, University of Messina, Policlinico Universitario G. Martino, Messina, Italy

[5 ]Master Program on Childhood, Adolescent and Women’s Endocrine Health, University of Messina, Policlinico Universitario G. Martino, Messina, Italy

[6 ]Interdepartmental Program of Molecular and Clinical Endocrinology, and Women’s Endocrine Health, University Hospital, Policlinico Universitario G. Martino, Messina, Italy