@misc{indiciaec76c84650386, title = {Regional differences in infant immunization against hepatitis B: did intervention work?}, author = {J I Takayama and J P Iser and A Gandelman}, year = {1999}, doi = {10.1006/pmed.1998.0390}, url = {https://pubmed.ncbi.nlm.nih.gov/10048107/}, note = {Source identifier: 10048107} }