Colombo, Tatiana Elias, et al. “ CO-INFECTION OF DENGUE VIRUS BY SEROTYPES 1 AND 4 IN PATIENT FROM MEDIUM SIZED CITY FROM BRAZIL ”. Revista Do Instituto De Medicina Tropical De São Paulo, vol. 55, no. 4, July 2013, pp. 275-81, https://revistas.usp.br/rimtsp/article/view/78655.