Severe Hypothyroidism due to the Loss of Therapeutic Efficacy of l-Thyroxine in a Patient with Esophageal Complication Associated with Systemic Sclerosis oleh Antonio Lobasso, Liliana Nappi, Letizia Barbieri, Carmela Peirce, Serena Ippolito, Debora Arpaia, Francesca Wanda Rossi, Amato de Paulis, Bernadette Biondi