COVID-19 mortality statistics: a comparative study of epidemiological surveillance data and death certificates in 2020 in Belgium, Vernemmen, Catharina, Ekelson Reindert, Jurcevic Jure, Nganda Serge, Scohy Aline, Dequeker Sara, Blot Koen, Dubourg Dominique, Joris Marie-Isabelle, Masson Hanna, et al. , Quetelet Journal, 16 December 2024, Volume 11, Issue 1, (2024)