TY  - RPRT
TI  - Research design and analysis issues.
AU  - S M McKinlay
AU  - E J Stone
AU  - D M Zucker
PY  - 1989
DO  - 10.1177/109019818901600213
UR  - https://pubmed.ncbi.nlm.nih.gov/2732070/
ID  - 2732070
ER  -