TY  - RPRT
TI  - Statistical power and optimal design for multisite randomized trials.
AU  - S W Raudenbush
AU  - X Liu
PY  - 2000
DO  - 10.1037/1082-989x.5.2.199
UR  - https://pubmed.ncbi.nlm.nih.gov/10937329/
ID  - 10937329
ER  -