TY  - RPRT
TI  - Cluster randomization trials in tropical medicine: a case study.
AU  - N Klar
AU  - T Gyorkos
AU  - A Donner
DO  - 10.1016/0035-9203(95)90056-x
UR  - https://pubmed.ncbi.nlm.nih.gov/7570898/
ID  - 7570898
ER  -