TY  - RPRT
TI  - A, B or O: what's the difference?
AU  - E R Giblett
AU  - M C Crookston
PY  - 1973
DO  - 10.1056/nejm197304262881711
UR  - https://pubmed.ncbi.nlm.nih.gov/4120864/
ID  - 4120864
ER  -