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1. Machine learning risk prediction of mortality for patients undergoing surgery with perioperative SARS-CoV-2: The COVIDSurg mortality score
2. Global health at crossroads: uniting together to overcome challenges, restore trust and advance priorities for a sustainable future
3. Impact of Bacillus Calmette-Gue´rin (BCG) vaccination on postoperative mortality in patients with perioperative SARS-CoV-2 infection
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