AbouZahr C, Bratschi MW, Cercone E, Mangharam A, Savigny D, Dincu I, Forsingdal AB, Joos O, Kamal M, Fat DM, Mathenge G, Marinho F, Mitra RG, Montgomery J, Muhwava W, Mwamba R, Mwanza J, Onaka A, Sejersen TB, Tuoane-Nkhasi M, Sferrazza L, Setel P. The COVID-19 Pandemic: Effects on Civil Registration of Births and Deaths and on Availability and Utility of Vital Events Data. Am J Public Health. 2021 06; 111(6):1123-1131.