Sample selection may bias the outcome of an adolescent mental health survey: results from a five-year follow-up of 4171 adolescents
| Autor: | Kekkonen, V., Kivimäki, P., Valtonen, H., Hintikka, J., Tolmunen, T., Lehto, S.M., Laukkanen, E. |
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| Zdroj: | In Public Health February 2015 129(2):162-172 |
| Databáze: | ScienceDirect |
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