TY  - GEN
AU  - Pedreira,J
AU  - Martinez,J M
AU  - Guardia,J
AU  - Pahissa,A
AU  - Gallart,M T
TI  - Letter: HBAg subtypes in Spain
SN  - 0140-6736
PY  - 1974///0302
KW  - Hepatitis B
KW  - microbiology
KW  - Hepatitis B Antigens
KW  - isolation & purification
KW  - Humans
KW  - Liver Diseases
KW  - Spain
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1016/s0140-6736(74)92328-9
ER  -