Positive health beliefs are associated with improvement of glycated hemoglobin and lipid profiles in Mexican patients with type 2 diabetes mellitus: a cross-sectional study oleh Abril Violeta Muñoz-Torres, Patricia Medina-Bravo, Brenda Elizabeth Valerio-Pérez, Grecia Mendoza-Salmeron, Jorge Escobedo-de la Peña, Lubia Velázquez-López