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;