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Report on smoking habits of Winnipeg school children: 1960-1968
A third survey of the smoking habits of all the students in the Winnipeg School Division from grades 5 to 12 has been completed. The three surveys cover a period of eight years and show an increase in smoking at all grade levels in both sexes. The increase is most marked in the girls and in both sex...
Uloženo v:
| Hlavní autor: | |
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| Médium: | Artigo |
| Jazyk: | Inglês |
| Vydáno: |
1973
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| Témata: | |
| On-line přístup: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1941393/ https://ncbi.nlm.nih.gov/pubmed/4704894 |
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