TY  - RPRT
TI  - Viral hepatitis, type B (MS-2 strain). Studies on active immunization.
AU  - S Krugman
AU  - J P Giles
AU  - J Hammond
PY  - 1971
UR  - https://pubmed.ncbi.nlm.nih.gov/4996665/
ID  - 4996665
ER  -