Martens T 1

1. Machine learning risk prediction of mortality for patients undergoing surgery with perioperative SARS-CoV-2: The COVIDSurg mortality score
2. The European Registry for Patients with Mechanical Circulatory Support (EUROMACS): third Paediatric (Paedi-EUROMACS) report
3. The European Registry for Patients with Mechanical Circulatory Support (EUROMACS): fourth Paediatric EUROMACS (Paedi-EUROMACS) report
4. Impact of Bacillus Calmette-Gue´rin (BCG) vaccination on postoperative mortality in patients with perioperative SARS-CoV-2 infection
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