Methotrexate therapy is not associated with increased liver stiffness and significant liver fibrosis in rheumatoid arthritis patients: A cross-sectional controlled study with real-time two-dimensional shear wave elastography. - Erre, Gian Luca; Cadoni, Maria Luisa; Meloni, Pierluigi; Castagna, Floriana; Mangoni, Arduino Aleksander; Piga, Matteo; Passiu, Giuseppe; Carru, Ciriaco; Zinellu, Angelo; Vidili, Gianpaolo (European Journal of Internal Medicine, 2019)