because the risk factors for human immunodeficiency virus ( hiv ) infection and hepatitis b ( hbv ) are similar and therefore coinfection is not uncommon , a detailed histological and immunohistochemical study of chronic hepatitis b infection in a group of 20 hiv positive caucasian males ( who did not have aids ) and 30 hiv negative controls were undertaken .
C0019163
hepatitis b
C0524909
chronic hepatitis b