TY  - RPRT
TI  - How much does pre-trial testing influence complex intervention trials and would more testing make any difference? An email survey.
AU  - Shaun Treweek
AU  - Frank Sullivan
PY  - 2006
DO  - 10.1186/1471-2288-6-28
UR  - https://pubmed.ncbi.nlm.nih.gov/16792798/
ID  - 16792798
ER  -