[1] Free Univ Amsterdam, Inst Cardiovasc Res, Physiol Lab, NL-1081 BT Amsterdam, Netherlands
[2] Free Univ Amsterdam, Inst Cardiovasc Res, Dept Anesthesiol, NL-1081 BT Amsterdam, Netherlands
[3] Thorax Ctr Ignatius, Dept Anesthesiol, Breda, Netherlands