TY  - RPRT
TI  - Letter: Quick test for HBAg using charcoal.
AU  - S Polak
PY  - 1974
DO  - 10.1016/s0140-6736(74)93169-9
UR  - https://pubmed.ncbi.nlm.nih.gov/4131051/
ID  - 4131051
ER  -