An observational post-authorization study to assess the effectiveness of a single dose Ad26.COV2.S for the prevention of COVID-19 using real-world data - Boehme, Amelia; Harvey, Raymond A.; Madsen, Ann; Rubens, Lexie; Toyip, Astra; Batech, Michael; Ricci, Deborah; Nyaku, Mawuli (Frontiers in Public Health, 2024)