TY  - RPRT
TI  - Letter: Samples for hepatitis B antigen testing.
AU  - C R Madeley
AU  - G E Urquhart
AU  - S McMichael
AU  - N R Grist
PY  - 1974
DO  - 10.1136/bmj.4.5942.465
UR  - https://pubmed.ncbi.nlm.nih.gov/4425923/
ID  - 4425923
ER  -