Impact of the COVID-19 pandemic on the clinical training of last year medical students in Mexico: a cross-sectional nationwide study. - Servin-Rojas M; Olivas-Martinez A; Dithurbide-Hernandez M; Chavez-Vela J; Petricevich VL; García-Juárez I; Gallo de Moraes A; Zendejas B (BMC medical education, 2022)