Monitoring COVID-19 in Belgian general practice: A tool for syndromic surveillance based on electronic health records, Vos, Bénédicte, Debouverie Laura, Doggen Kris, Delvaux Nicolas, Aertgeerts Bert, De Schreye Robrecht, and Vaes Bert , European Journal of General Practice, 2024-01-08, Volume 30, Issue 1, (2024)