00472nas a2200169   4500000000100000000000100001008004100002100001400043700001300057700001400070700001300084700001500097245015800112300001200270490000600282022001400288       2019                            d1 aJ. Blakey1 aA. Gayle1 aM. Slater1 aG. Jones1 aM. Baldwin00aObservational cohort study to investigate the unmet need and time waiting for referral for specialist opinion in adult asthma in England (UNTWIST asthma)  ae0317400 v9  a2044-6055