A search was also conducted in the internal reference catalogues in the libraries of the Mexican School of Public Health and the University of Antioquia, Colombia, since they were the current home institutions of the review's researchers.
En los catálogos bibliográficos internos de las bibliotecas de la Escuela de Salud Pública de México y de la Universidad de Antioquia, Colombia, por ser las sedes en ese momento de los investigadores del presente estudio.