title: Hepatitis B vaccination--the present status.
authors: Department of Medicine, National University Hospital, Singapore.
authors: I
authors: I
authors: Yap
authors: R
authors: R
authors: Guan
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D006509:Hepatitis B / Q000517:prevention & control*; D006801:Humans; D014611:Vaccination / Q000379:methods