Rissardo, L. K., Furlan, M. C. R., Marcon, S. S., Ferrer, A. L. M. and Oliveira, R. G. (2010) “Hospital morbidity before and after vaccination program against rotavirus in the state of Paraná-Brazil: exploratory-descriptive study”, Online Brazilian Journal of Nursing. Niterói (RJ), 9(2). doi: 10.5935/1676-4285.20103053.