TY - RPRT TI - Structural interventions: concepts, challenges and opportunities for research. AU - K M Blankenship AU - S R Friedman AU - S Dworkin AU - J E Mantell PY - 2006 DO - 10.1007/s11524-005-9007-4 UR - https://pubmed.ncbi.nlm.nih.gov/16736355/ ID - 16736355 ER -