Microcirculatory alterations after cardiopulmonary bypass as assessed with near infrared spectroscopy: a pilot study. - Tripodaki ES; Tasoulis A; Vasileiadis I; Vastardis L; Skampas N; Sakellaridis T; Argiriou M; Charitos C; Nanas S (Canadian journal of anaesthesia = Journal canadien d'anesthesie, 2012)