Costa Clemens, Sue Ann ; Weckx, Lily ; Clemens, Ralf... https://researchonline.lshtm.ac.uk/id/eprint/4672631/1/Costa-Clemens-etal-2022-Heterologous-versus-homologous-covid-19-booster-vaccination-in-previous-recipients-of-two-doses-of-coronavac-covid-19-vaccine-in-brazil-rhh-001.pdf.
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2022