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Annals of Epidemiology > 2017 > 27 > 2 > 77-82
IEEE Revista Iberoamericana de Tecnologias del Aprendizaje > 2015 > 10 > 3 > 134 - 142
IEEE Transactions on Education > 2011 > 54 > 2 > 263 - 272
2010 IEEE Frontiers in Education Conference (FIE) > F3H-1 - F3H-6