Burnout syndrome in first to sixth-year medical students at a private university in the north of Mexico: descriptive cross-sectional study oleh Laura Asencio-López, Guillermo Daniel Almaraz-Celis, Vicente Carrillo Macie, Paola Huerta Valenzuela, Luis Silva Goytia, Marcos Muñoz Torres, Fernando Monroy Caballero, Joel Regalado Tapia, Kerigma Dipp Martin, Dinorah López Miranda, Clyvia Medina Lavenant, Karen Pizarro Rodríguez, Cesar Santiago Martínez, Alma Geovanna Saucedo Aparicio, Rodolfo Flores Lepe