TY - RPRT TI - Extending the CONSORT statement to cluster randomized trials: for discussion. AU - D R Elbourne AU - M K Campbell PY - 2001 DO - 10.1002/1097-0258(20010215)20:3<489::aid-sim806>3.0.co;2-s UR - https://pubmed.ncbi.nlm.nih.gov/11180315/ ID - 11180315 ER -