Single-item and multiple-item measures of adherence to public health behavior guidelines were incongruent
| Autor: | van Keulen, Hilde M., Mesters, Ilse, van Mechelen, Willem, de Vries, Hein |
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| Zdroj: | In Journal of Clinical Epidemiology 2010 63(1):75-84 |
| Databáze: | ScienceDirect |
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