Implementation of the national immunization strategy in the population of the cantons San Pedro de Huaca - Tulcan of the province of Carchi. Horizontes de Enfermería, [S. l.], n. 7, p. 149–161, 2018. DOI: 10.32645/13906984.165. Disponível em: https://www.revistasdigitalesupeceduec35.biteca.online/index.php/enfermeria/article/view/165. Acesso em: 18 dec. 2025.