Unexplained Hyperthyrotropinemia: A Biochemical and Clinical Challenge. - Croce, Laura; Chytiris, Spyridon; Coperchini, Francesca; Ferraro, Giovanni; Minelli, Linda; Navarra, Antonella; Magri, Flavia; Chiovato, Luca; Trimboli, Pierpaolo; Rotondi, Mario (Journal of Clinical Medicine, 2023)