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This cross-sectional survey assessed the determinants of human papillomavirus (HPV) infections among 2080 women who participated in cervical cancer screening. HPVs were typed by restriction and sequencing analyses. The prevalence of HPV was 7.3% (4.2% for high-risk, 1.9% for low-risk, and 2.1% for unknown-risk types). High-risk HPV prevalence decreased with(More)
A case-control study was conducted on 1986 Hong Kong women to assess the risk of human papillomavirus (HPV) type 16 variants for cervical neoplasia. In total, 255 women were HPV-16 positive and were analyzed for E6 and E7 sequence variation. Two novel substitutions at E6 (T86I and Q116E) and 1 at E7 (R66W) were found. Most HPV-16 variants were of Asian(More)
The numerical integration is an important computing method in science and engineering. An algorithm of neural network based on cosine and sine basis functions is proposed. It uses the output of neural network to approximate to the integrand by training the weights a<sub>k</sub> and b<sub>k</sub>. The accuracy and efficiency of the algorithm presented are(More)
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