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Caspard H, Steffey A, Mallory RM, et al. Evaluation of the safety of live attenuated influenza vaccine (LAIV) in children and adolescents with asthma and high-risk conditions: a population-based prospective cohort study conducted in England with the Clinical Practice Research Datalink. BMJ Open 2018;8:e023118. doi: 10.1136/bmjopen-2018-023118.
This article was previously published with an error.
There should be a last sentence in materials and methods section:
The study protocol was approved by the CPRD Independent Scientific Advisory Committee (ISAC; protocol 14_062) and registered at ENCePP (EUPAS18527).
Reference 5 should be: PRIMIS Nottingham. Seasonal influenza vaccine uptake reporting specification. http://www.nottingham.ac.uk/primis/documents/specs/seasonal-flu-lqd-specification-14-15-v7.pdf (Accessed 27 Jul 2017).
Reference 6 should be: Davies SC, Cosford P, Keogh B. The national flu immunization programme 2017/18. http://allcatsrgrey.org.uk/wp/wpfb-file/annual_flu__letter_2017to2018-pdf/ (Accessed 25 Jul 2017).
Reference 8 should be: NHS Digital. Hospital episodes statistics. http://content.digital.nhs.uk/hes (Accessed 4 Dec 2017).
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