TY  - RPRT
TI  - Statistical methods for the meta-analysis of cluster randomization trials.
AU  - A Donner
AU  - G Piaggio
AU  - J Villar
PY  - 2001
DO  - 10.1177/096228020101000502
UR  - https://pubmed.ncbi.nlm.nih.gov/11697225/
ID  - 11697225
ER  -