Los autores declaran no tener conflictos de interés. Este trabajo fue financiado por CONICYT, Fondo de Fomento al Desarrollo Científico y Tecnológico (FONDEF) y el Ministerio de Salud (MINSAL) del Gobierno de Chile a través del XV Concurso de Investigación y Desarrollo en Salud, FONIS 2018 SA18I0138.
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