The protocol was withdrawn because the review was not completed and the methods are now out of date.
Carson-Chahhoud, K. V., Schultz, T. J., Kopsaftis, Z., Brinn, M. P., Barton, C., Ali, A., … Sharrad, K. J. (2021). Asthma self management education with regular healthcare professional review or written action plans or both in adults. Cochrane Database of Systematic Reviews, 2021(5). https://doi.org/10.1002/14651858.CD009479.pub2