Putting practice into research: a 20-year perspective.
Green
L A
LA
Center for Policy Studies in Family Practice and Primary Care, Washington, DC, USA. lgreen@aafp.org
D005194:Family Practice / Q000706:statistics & numerical data*; D006801:Humans; D012106:Research / Q000458:organization & administration / Q000706:statistics & numerical data*; D018571:Sentinel Surveillance; D014481:United States