Myositis-associated Interstitial Lung Disease: Clinical Characteristics and Factors Related to Pulmonary Function Improvement: A Latin-American Multicenter Cohort Study María Laura Alberti, Verónica Wolff, Felipe Reyes, Ernesto Juárez-León, Leandro Fassola, Gabriel Carballo, Ivette Buendía-Roldán, Jorge Rojas-Serrano, Fabián Caro, Matías Florenzano, Francisco Paulín

Diagnostic challenge: Bethlem myopathy mimicking inflammatory myopathy Olga Rusinovich-Lovgach, Luz Morán, Oscar Toldos-Gonzalez, Marta Vaquero Martínez, Borja Cabal-Paz, José Luis Andréu Sánchez

External validation of the 2017 ACR/EULAR classification criteria for inflammatory myopathies in a Mexican cohort: Role of autoantibodies in the diagnosis and classification of patients with inflammatory myopathies Grisel Guadalupe Sánchez-Mendieta, David Vega-Morales, Miguel Ángel Villarreal-Alarcón, Jesús Eduardo Compean-Villegas, Ilse Andrea Moreno-Arquieta, Dionicio Ángel Galarza-Delgado