PT  - JOURNAL ARTICLE
AU  - Neuhauser, D
AU  - Diaz, M
TI  - Quality improvement research: are randomised trials necessary?
AID  - 10.1136/qshc.2006.021584
DP  - 2007 Feb 01
TA  - Quality and Safety in Health Care
PG  - 77--80
VI  - 16
IP  - 1
4099  - http://qualitysafety.bmj.com/content/16/1/77.short
4100  - http://qualitysafety.bmj.com/content/16/1/77.full
SO  - Qual Saf Health Care2007 Feb 01; 16