PT - JOURNAL ARTICLE AU - Anne Sales AU - Sanjay Saint TI - Evaluating the effect of a national collaborative: a cautionary tale AID - 10.1136/bmjqs-2012-001065 DP - 2012 Aug 01 TA - BMJ Quality & Safety PG - 621--623 VI - 21 IP - 8 4099 - http://qualitysafety.bmj.com/content/21/8/621.short 4100 - http://qualitysafety.bmj.com/content/21/8/621.full SO - BMJ Qual Saf2012 Aug 01; 21