TY  - RPRT
TI  - Letter: Not so double-blind?
AU  - T W Anderson
AU  - M J Ashley
AU  - E A Clarke
PY  - 1976
DO  - 10.1136/bmj.1.6007.457-d
UR  - https://pubmed.ncbi.nlm.nih.gov/766898/
ID  - 766898
ER  -