REY, Luís Carlos. 2000. “ Nasopharyngeal Streptococcus Pneumoniae Isolated from Healthy and Pneumonia Children in Fortaleza, Brazil: Serogroups and Antibiotic Resistance ”. Revista Do Instituto De Medicina Tropical De São Paulo 42 (4): 184-84. https://revistas.usp.br/rimtsp/article/view/30446.