Dentition, oral hygiene, and risk of ora
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Tongzhang Zheng; Peter Boyle; Huanfang Hu; Jun Duan; Peijue Jiang; Daquan Ma; Li
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Article
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1990
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Springer Netherlands
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English
β 443 KB
A case-control study of oral cancer was conducted in Beijing, People's Republic of China. The study was hospitalbased and controls were hospital in-patients matched to the cases by age and gender. A total of 404 case/control pairs were interviewed. This paper provides data regarding oral conditions