TY  - RPRT
TI  - Methodological issues in evaluating complex healthcare interventions.
AU  - Bronagh Blackwood
PY  - 2006
DO  - 10.1111/j.1365-2648.2006.03869.x
UR  - https://pubmed.ncbi.nlm.nih.gov/16722959/
ID  - 16722959
ER  -