00449nas a2200169   4500000000100000000000100001008004100002100001500043700001600058700001400074700001500088700001500103245013300118300000700251490000700258022001400265       2017                            d1 aD. Morales1 aB. Lipworth1 aP. Donnan1 aC. Jackson1 aB. Guthrie00aRespiratory effect of beta-blockers in people with asthma and cardiovascular disease: population-based nested case control study  a180 v15  a1741-7015