TY  - RPRT
TI  - Letter from the editors.
AU  - L M Freeman
AU  - M D Blaufox
PY  - 1973
DO  - 10.1016/s0001-2998(73)80001-7
UR  - https://pubmed.ncbi.nlm.nih.gov/4684499/
ID  - 4684499
ER  -