title: Studies on the maternal-infant transmission of the hepatitis B virus and HBV infection within families.
mesh_terms: D000293:Adolescent; D000328:Adult; D002140:California; D002648:Child; D005260:Female; D006509:Hepatitis B / Q000453:epidemiology / Q000635:transmission*; D006515:Hepatitis B virus; D006801:Humans; D008297:Male; D008431:Maternal-Fetal Exchange; D008875:Middle Aged; D011247:Pregnancy