TY  - RPRT
TI  - Design using historical controls.
AU  - Albert Yen
AU  - Ericka Simpson
AU  - Lanny Haverkamp
AU  - Stanley Appel
PY  - 2004
DO  - 10.1080/17434470410019807
UR  - https://pubmed.ncbi.nlm.nih.gov/15512876/
ID  - 15512876
ER  -