PT - JOURNAL ARTICLE AU - Bruce A. Christiansen TI - What Does It Cost to Change Behavior? AID - 10.1370/afm.1413 DP - 2012 May 01 TA - The Annals of Family Medicine PG - 197--198 VI - 10 IP - 3 4099 - http://www.annfammed.org/content/10/3/197.short 4100 - http://www.annfammed.org/content/10/3/197.full SO - Ann Fam Med2012 May 01; 10