PT - JOURNAL ARTICLE AU - David Lanier TI - Primary Care Practice-Based Research Comes of Age in the United States AID - 10.1370/afm.338 DP - 2005 May 01 TA - The Annals of Family Medicine PG - S2--S4 VI - 3 IP - suppl 1 4099 - http://www.annfammed.org/content/3/suppl_1/S2.short 4100 - http://www.annfammed.org/content/3/suppl_1/S2.full SO - Ann Fam Med2005 May 01; 3