Risk factors for SARS-CoV-2 infection: a test-negative case–control study with additional population controls in Norway
Marjut Sarjomaa, Chi Zhang, Yngvar Tveten, Hege Kersten, Harald Reiso, Randi Eikeland, Johny Kongerud, Kristine Karlsrud Berg, Carina Thilesen, Svein Arne Nordbø, Ingeborg S Aaberge, Jan Vandenbroucke, Neil Pearce, Anne Kristin Moeller Fell
BMJ Open Jan 2024, 14 (1) e073766; DOI: 10.1136/bmjopen-2023-073766