PT - JOURNAL ARTICLE AU - M Hassan Murad AU - Reem A Mustafa AU - Holger J Schünemann AU - Shahnaz Sultan AU - Nancy Santesso TI - Rating the certainty in evidence in the absence of a single estimate of effect AID - 10.1136/ebmed-2017-110668 DP - 2017 Mar 20 TA - Evidence Based Medicine PG - ebmed-2017-110668 4099 - http://ebm.bmj.com/content/early/2017/03/20/ebmed-2017-110668.short 4100 - http://ebm.bmj.com/content/early/2017/03/20/ebmed-2017-110668.full