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RESPIRATORY SYMPTOMS AND SMOKING HABITS OF SENIOR INDUSTRIAL STAFF
The prevalence of respiratory symptoms and the smoking habits of 224 industrial `executives' aged 30 to 69 years in Social Classes I and II were ascertained by means of the Medical Research Council's questionnaire on respiratory symptoms; 31% had persistent cough, 25% had persistent phlegm...
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| Main Authors: | , , |
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| 格式: | Artigo |
| 語言: | Inglês |
| 出版: |
1965
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| 主題: | |
| 在線閱讀: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1008262/ https://ncbi.nlm.nih.gov/pubmed/14278803 |
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