[The prevalence of HBV in rural areas of Hebei Province. Viral Hepatitides Investigation Group of Zhengding County, Hebei Province].
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D002681:China; D005260:Female; D006509:Hepatitis B / Q000150:complications / Q000453:epidemiology* / Q000401:mortality; D006801:Humans; D007223:Infant; D008113:Liver Neoplasms / Q000150:complications; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D012424:Rural Population