In children, the microbiota of the nasopharynx and bronchoalveolar lavage fluid are both similar and different.
Kloepfer KM, Deschamp AR, Ross SE, Peterson-Carmichael SL, Hemmerich CM, Rusch DB, Davis SD. In children, the microbiota of the nasopharynx and bronchoalveolar lavage fluid are both similar and different. Pediatr Pulmonol. 2018 04; 53(4):475-482.