Comparison between radial artery tonometry pulse analyzer and pulsed-Doppler echocardiography derived hemodynamic parameters in cardiac surgery patients: a pilot study oleh Rashad Zayat, Andreas Goetzenich, Ju-Yeon Lee, HeeJung Kang, So-Hyun Jansen-Park, Thomas Schmitz-Rode, Giulia Musetti, Heike Schnoering, Rüdiger Autschbach, Nima Hatam, Ali Aljalloud