TY  - RPRT
TI  - Hepatitis B: global importance and need for control.
AU  - J E Maynard
PY  - 1990
DO  - 10.1016/0264-410x(90)90209-5
UR  - https://pubmed.ncbi.nlm.nih.gov/2139281/
ID  - 2139281
ER  -