Wiedemann, D., Bonaros, N., Feuchtner, G., Bonatti, J. and Schachner, T. 2009. Difficulties in Beating-Heart Totally Endoscopic Coronary Artery Bypass Grafting: How to Handle the Problem Endoscopically. The Heart Surgery Forum. 12, 3 (Jun. 2009), E141-E142. DOI:https://doi.org/10.1532/HSF98.20091040.