National Institute for Heath and Care Excellence (NICE). NICE clinical guideline 191 – Pneumonia. Issued: December 2014. Available at:http://www.nice.org.uk/guidance/cg191 [Last accessed: November 2016].
Corrales-Medina VF, Alvarez KN, Weissfeld LA et al. Association between hospitalization for pneumonia and subsequent risk of cardiovascular disease. Journal of the American Medical Association. 2015; 313(3):264-274
Office of National Statistics: Deaths: underlying cause, sex and age-group, 2013. Table 5.10: Diseases of the respiratory system, England and Wales. Ages =15, ICD-10 codes J12-J18.
Miller E, et al. Herd Immunity and serotype replacement 4 years after seven-valent pneumococcal conjugate vaccination in England and Wales: an observational cohort study. Lancet Infect. Dis. 2011;11(10):760-768
Shrestha S, Foxman B, Weinberger DM, et al. Identifying the interaction between influenza and pneumococcal pneumonia using incidence data. Sci Transl Med. 2013 Jun 26;5(191):191ra84.