PT - JOURNAL ARTICLE AU - Igho J Onakpoya TI - Rare adverse events in clinical trials: understanding the rule of three AID - 10.1136/ebmed-2017-110885 DP - 2018 Feb 01 TA - BMJ Evidence-Based Medicine PG - 6--6 VI - 23 IP - 1 4099 - http://ebm.bmj.com/content/23/1/6.short 4100 - http://ebm.bmj.com/content/23/1/6.full SO - BMJ EBM2018 Feb 01; 23