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Tobacco Smoking Surveillance: Is Quota Sampling an Efficient Tool for Monitoring National Trends? A Comparison with a Random Cross-Sectional Survey
- Romain Guignard,
- Jean-Louis Wilquin,
- Jean-Baptiste Richard,
- François Beck
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- Published: October 23, 2013
- https://doi.org/10.1371/journal.pone.0078372