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Measurement agreement of the selfadministered questionnaire of the Belgian Health Interview Survey : paper-and-pencil versus web-based mode
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The Belgian health examination survey: objectives, design and methods
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Measurement agreement of the selfadministered questionnaire of the Belgian Health Interview Survey: Paper-and-pencil versus web-based mode
Measurement agreement of the self-administered questionnaire of the Belgian Health Interview Survey: Paper-and-pencil versus web-based mode