TY  - RPRT
TI  - Statistics notebook: Entry II.C: Masked studies.
AU  - P N De Land
AU  - W W Chase
PY  - 1991
DO  - 10.1097/00006324-199106000-00012
UR  - https://pubmed.ncbi.nlm.nih.gov/1891200/
ID  - 1891200
ER  -