TY  - RPRT
TI  - Hepatitis B surface antigen: regional variation in sub-type ratio in the Canadian Red Cross donor population.
AU  - J P Valet
AU  - J Matte
AU  - A P O'Connell
AU  - J Duravetz
PY  - 1975
UR  - https://pubmed.ncbi.nlm.nih.gov/47783/
ID  - 47783
ER  -