Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (DFG-INST 2388/71-1 FUGG)
Received: 1 June 2020
Accepted: 7 August 2020
First Online: 12 August 2020
Ethics approval and consent to participate
: Patients scheduled for isolated MVS or OPCAB via sternotomy between 2014 and 2017 were primarily screened for study. The ethics committee of the University Clinic of Ruprecht-Karls-University Tuebingen approved the retrospective enrollment of these cohorts (IRB #350/2015R) and by legislation no patient consent is required for this study type. PMVR patients between July 2015 and April 2016 were included prospectively and informed consent was given prior to enrollment (IRB #260/2015R).
: Not applicable.
: The authors declare that they have no competing interests.