José, Ricardo J.; Brown, Jeremy S. (2017). “Adult pneumococcal vaccination”. 《Current Opinion in Pulmonary Medicine》 23 (3): 225–230. doi:10.1097/MCP.0000000000000369. PMID28198725.
Metlay JP, Schulz R, Li YH, 외. (July 1997). “Influence of age on symptoms at presentation in patients with community-acquired pneumonia”. 《Archives of Internal Medicine》 157 (13): 1453–9. doi:10.1001/archinte.157.13.1453. PMID9224224.
José, Ricardo J.; Brown, Jeremy S. (2017). “Adult pneumococcal vaccination”. 《Current Opinion in Pulmonary Medicine》 23 (3): 225–230. doi:10.1097/MCP.0000000000000369. PMID28198725.
Metlay JP, Schulz R, Li YH, 외. (July 1997). “Influence of age on symptoms at presentation in patients with community-acquired pneumonia”. 《Archives of Internal Medicine》 157 (13): 1453–9. doi:10.1001/archinte.157.13.1453. PMID9224224.