Ryan, DermotHeatley, HeathHeaney, Liam GJackson, David JPfeffer, Paul EBusby, JohnMenzies-Gow, AndrewJones, RupertTran, Trung NAl-Ahmad, MonaBacker, VibekeBelhassen, Manon M.Bosnic-Anticevich, SinthiaBourdin, ArnaudBulathsinhala, LakminiCarter, VictoriaChaudhry, IshaEleangovan, NevaashniFitzGerald, J. MarkGibson, Peter G.Hosseini, NaeimehKaplan, AlanMurray, Ruth BRhee, Chin KookVan Ganse, EricPrice, David B2021-04-092021-04-092021-04Ryan, D, Heatley, H, Heaney, L G, Jackson, D J, Pfeffer, P E, Busby, J, Menzies-Gow, A, Jones, R, Tran, T N, Al-Ahmad, M, Backer, V, Belhassen, M M, Bosnic-Anticevich, S, Bourdin, A, Bulathsinhala, L, Carter, V, Chaudhry, I, Eleangovan, N, FitzGerald, J M, Gibson, P G, Hosseini, N, Kaplan, A, Murray, R B, Rhee, C K, Van Ganse, E & Price, D B 2021, 'Potential severe asthma hidden in UK primary care', The Journal of Allergy and Clinical Immunology: In Practice, vol. 9, no. 4, pp. 1612-1623.e9. https://doi.org/10.1016/j.jaip.2020.11.0532213-2198https://hdl.handle.net/2164/16215Funding: ISAR is conducted by Observational & Pragmatic Research Institution (OPRI), and co-funded by OPC Global and AstraZeneca. This research study was co-funded by AstraZeneca and Optimum Patient Care Global Limited, including access to the Optimum Patient Care Research Database (OPCRD).211870445engOptimum Patient Care Research Databasenternational Severe Asthma Registrypotential severe asthmareferraltertiary careR MedicineSupplementary DataRJournal article10.1016/j.jaip.2020.11.05394