PT - JOURNAL ARTICLE AU - Andrew Tannahill TI - “You don't have to …”: walking to a healthier nation AID - 10.1136/bjsm.34.2.79-a DP - 2000 Apr 01 TA - British Journal of Sports Medicine PG - 79--80 VI - 34 IP - 2 4099 - http://bjsm.bmj.com/content/34/2/79.2.short 4100 - http://bjsm.bmj.com/content/34/2/79.2.full SO - Br J Sports Med2000 Apr 01; 34