TY  - RPRT
TI  - Problem hepatitis viruses: the mutants.
AU  - R S Koff
PY  - 1994
DO  - 10.1016/0002-9343(94)90191-0
UR  - https://pubmed.ncbi.nlm.nih.gov/8109589/
ID  - 8109589
ER  -