TY - JOUR AU - Palmer, K; Ridgway, T; Al-Rawi, O; Poullis, M TI - Heparin therapy during extracorporeal circulation: deriving an optimal activated clotting time during cardiopulmonary bypass for isolated coronary artery bypass grafting JO - J Extra Corpor Technol IS - 3 VL - 44 PY - 2012 SP - 145 EP - 150 ER -