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Prevalence of Anti-SARS-CoV-2 Antibodies and Potential Determinants among the Belgian Adult Population: Baseline Results of a Prospective Cohort Study
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Data collection in pandemic times: the case of the Belgian COVID-19 health surveys
Measurement agreement of the self-administered questionnaire of the Belgian Health Interview Survey: Paper-and-pencil versus web-based mode.
The Belgian health examination survey: objectives, design and methods