TY  - RPRT
TI  - Using randomized controlled trials to evaluate socially complex services: problems, challenges and recommendations.
AU  - Nancy Wolff
PY  - 2000
DO  - 10.1002/1099-176x(200006)3:2<97::aid-mhp77>3.0.co;2-s
UR  - https://pubmed.ncbi.nlm.nih.gov/11967443/
ID  - 11967443
ER  -