Link: https://pubmed.ncbi.nlm.nih.gov/19593248/
Citation: Millar, E. V., O'Brien, K. L., Zell, E. R., Bronsdon, M. A., Reid, R., & Santosham, M. (2009). Nasopharyngeal carriage of Streptococcus pneumoniae in Navajo and White Mountain Apache children before the introduction of pneumococcal conjugate vaccine. The Pediatric infectious disease journal, 28(8), 711-716.