title: Prevalence of hepatitis (B) surface antigen among urinary schistosomal patients receiving frequent parenteral antischistosomal therapy.
mesh_terms: D006509:Hepatitis B / Q000635:transmission; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D006515:Hepatitis B virus / Q000276:immunology; D006801:Humans; D007267:Injections / Q000009:adverse effects; D008297:Male; D012548:Schistosoma haematobium; D012552:Schistosomiasis / Q000097:blood / Q000188:drug therapy / Q000276:immunology*; D012556:Schistosomicides / Q000008:administration & dosage*
chemical_list: D006514:Hepatitis B Surface Antigens; D012556:Schistosomicides