00657nas a2200229   4500000000100000008004100001100001800042700001700060700001500077700001700092700001300109700001400122700001900136700001200155700001400167700001500181700001500196700001300211700001500224245017400239022001400413       2019                            d1 aS. Venkatesan1 aM. Jorgensen1 aH. Manning1 aC. Andersson1 aA. Mozid1 aM. Coburn1 aS. Moonesinghe1 aP. Foex1 aM. Mythen1 aM. Grocott1 aJ. Hardman1 aP. Myles1 aR. Sanders00aPreoperative chronic beta-blocker prescription in elderly patients as a risk factor for postoperative mortality stratified by preoperative blood pressure: a cohort study  a0007-0912