Coronary artery bypass grafting in high-RISk patients randomised to off-or on-Pump surgery: a randomised controlled trial (the CRISP trial) - Rogers, C; Pike, K; Campbell, H; Reeves, B; Angelini, G; Gray, A; Altman, D; Miller, H; Wells, S; Taggart, D; Investigators, CRISP (HEALTH TECHNOLOGY ASSESSMENT, 2014)