RT Journal Article SR Electronic T1 Perioperative β-blockade improves outcomes in higher risk patients following non-cardiac surgery JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 26 OP 26 DO 10.1136/eb-2013-101408 VO 19 IS 1 A1 Prashant Vaishnava A1 Kim A Eagle YR 2014 UL http://ebm.bmj.com/content/19/1/26.abstract AB