TY  - RPRT
TI  - Sample size estimation for randomized pre-post designs.
AU  - J E Overall
AU  - R R Starbuck
PY  - 1979
DO  - 10.1016/0022-3956(79)90006-2
UR  - https://pubmed.ncbi.nlm.nih.gov/430441/
ID  - 430441
ER  -