At-risk registers integrated into primary care to stop asthma crises in the UK (ARRISA-UK) : study protocol for a pragmatic, cluster randomised trial with nested health economic and process evaluations

Smith, J R, Musgrave, S, Payerne, E, Noble, M, Sims, E J, Clark, A B, Barton, G, Pinnock, H, Sheikh, A, Wilson, A M & ARRISA-UK Group 2018, 'At-risk registers integrated into primary care to stop asthma crises in the UK (ARRISA-UK) : study protocol for a pragmatic, cluster randomised trial with nested health economic and process evaluations', Trials, vol. 19, 466. https://doi.org/10.1186/s13063-018-2816-z