PT - JOURNAL ARTICLE AU - Klaus Gebel AU - Ding Ding TI - Walking lowers mortality risk in older US adults AID - 10.1136/bmjebm-2018-110902 DP - 2018 May 04 TA - BMJ Evidence-Based Medicine PG - bmjebm-2018-110902 4099 - http://ebm.bmj.com/content/early/2018/05/04/bmjebm-2018-110902.short 4100 - http://ebm.bmj.com/content/early/2018/05/04/bmjebm-2018-110902.full