(Q36310759)
Statements
1 reference
Lessons for cluster randomized trials in the twenty-first century: a systematic review of trials in primary care (English)
1 reference
Obioha C Ukoumunne
1 reference
Deborah Ashby
1 reference
Sandra M Eldridge
1 reference
1 February 2004
1 reference
1 reference
1
1 reference
1
1 reference
80-90
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
Identifiers
1 reference
1 reference