Sample Characteristics Compared to Swiss Population.
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aPopulation data are from the 2008 census conducted by the Swiss Federal Statistical Office, except for H1N1 vaccination rate. Percentage of population in each age group is computed relative to the population aged 20 and above in order to ensure comparability with the age groups sampled.b[16].chttp://www.bag.admin.ch/influenza/01120/01134/index.html?lang=fr.
创建时间:
2015-12-02



