Surgical removal of tonsils and risk of COVID-19: a nested case–control study using data from UK Biobank and AMORIS Cohort. - Yang, Yanping; Hu, Kejia; Modig, Karin; Feychting, Maria; Janszky, Imre; Hammar, Niklas; Fang, Fang; Zhang, Zhe; Wei, Dang (BMC Medicine, 2024)