Back Prof. dr. J.G. Maessen Head of Cardiothoracic Surgery, Cardiothoracic Surgeon. Focus areas • Robotic surgery (thymectomy, Lung resections) • Rhythm surgery • Lung and mediastinum surgery • Minimally Invasive Direct Coronary Artery Bypass (MIDCAB) Contact j.g.maessen@mumc.nl Close the survey Was this page useful? Good Sufficient Insufficient To help us improve our website we would like to know why you do not find this page useful. You can select more than one reason below and give your opinion. I find the page too difficult to understand I can\'t find what I am looking for I find that the page is too boring Other reason (fill in below) Your opinion Send Leave this field blank Print Share this page Share this page via e-mail Share this page on Facebook Share this page on Twitter Share this page on LinkedIn Share this page on Pinterest Share this page on WhatsApp