Reliability assessment of ultrasound muscle echogenicity in patients with rheumatic diseases: Results of a multicenter international web-based study oleh Andrea Di Matteo, Andrea Di Matteo, Erica Moscioni, Maria Giovanna Lommano, Edoardo Cipolletta, Gianluca Smerilli, Sonia Farah, Carla Airoldi, Sibel Zehra Aydin, Andrea Becciolini, Karina Bonfiglioli, Marina Carotti, Greta Carrara, Tomas Cazenave, Davide Corradini, Micaela Ana Cosatti, Juan Josè de Agustin, Giulia Maria Destro Castaniti, Marco Di Carlo, Eleonora Di Donato, Luca Di Geso, Ashley Elliott, Daniela Fodor, Francesca Francioso, Alessandra Gabba, Alessandra Gabba, Cristina Hernández-Díaz, Rudolf Horvath, Jana Hurnakova, Diogo Jesus, Josefina Marin, Maria Victoria Martire, Riccardo Mashadi Mirza, Marco Massarotti, Alice Andreea Musca, Jagdish Nair, Tadashi Okano, Ioannis Papalopoulos, Javier Rosa, Marcos Rosemffet, João Rovisco, Davide Rozza, Fausto Salaffi, Crescenzio Scioscia, Carlo Alberto Scirè, Maria-Magdalena Tamas, Shun Tanimura, Lucio Ventura-Rios, Catalina Villota-Eraso, Orlando Villota, Paraskevi V. Voulgari, Florentin Ananu Vreju, Gentiana Vukatana, Johana Zacariaz Hereter, Anna Zanetti, Walter Grassi, Emilio Filippucci