Woodhead M, Blasi F, Ewig S, Garau J, Huchon G, Ieven M, Ortqvist A, Schaberg T, Torres A, van der Heijden G, Read R, Verheij TJ (November 2011). “Guidelines for the management of adult lower respiratory tract infections--full version”. 《Clinical Microbiology and Infection》. 17 Suppl 6: E1–59. doi:10.1111/j.1469-0691.2011.03672.x. PMID21951385.
Chen, Hengxi; Zhuo, Qi; Yuan, Wei; Wang, Juan; Wu, Taixiang (2008년 1월 23일). “Vitamin A for preventing acute lower respiratory tract infections in children up to seven years of age”. 《Cochrane Database of Systematic Reviews》 (1): CD006090. doi:10.1002/14651858.CD006090.pub2. PMID18254093.
Woodhead M, Blasi F, Ewig S, Garau J, Huchon G, Ieven M, Ortqvist A, Schaberg T, Torres A, van der Heijden G, Read R, Verheij TJ (November 2011). “Guidelines for the management of adult lower respiratory tract infections--full version”. 《Clinical Microbiology and Infection》. 17 Suppl 6: E1–59. doi:10.1111/j.1469-0691.2011.03672.x. PMID21951385.
Chen, Hengxi; Zhuo, Qi; Yuan, Wei; Wang, Juan; Wu, Taixiang (2008년 1월 23일). “Vitamin A for preventing acute lower respiratory tract infections in children up to seven years of age”. 《Cochrane Database of Systematic Reviews》 (1): CD006090. doi:10.1002/14651858.CD006090.pub2. PMID18254093.