PT  - JOURNAL ARTICLE
AU  - Terrence Shaneyfelt
TI  - Pyramids are guides not rules: the evolution of the evidence pyramid
AID  - 10.1136/ebmed-2016-110498
DP  - 2016 Aug 01
TA  - Evidence Based Medicine
PG  - 121--122
VI  - 21
IP  - 4
4099  - http://ebm.bmj.com/content/21/4/121.short
4100  - http://ebm.bmj.com/content/21/4/121.full
SO  - Evid Based Med2016 Aug 01; 21