00518nas a2200181   4500000000100000008004100001100001300042700001500055700001700070700001400087700001700101700001600118700001400134245015600148300001000304490000800314022001400322       2013                            d1 aJ. Quint1 aE. Herrett1 aK. Bhaskaran1 aA. Timmis1 aH. Hemingway1 aJ. Wedzicha1 aL. Smeeth00aEffect of beta blockers on mortality after myocardial infarction in adults with COPD: population based cohort study of UK electronic healthcare records  af66500 v347  a0959-8138