PT - JOURNAL ARTICLE AU - Ellen J Weber TI - Correlation and crowding measures: the fundamental lesson behind complex statistics AID - 10.1136/emermed-2015-205587 DP - 2016 May 01 TA - Emergency Medicine Journal PG - 306--306 VI - 33 IP - 5 4099 - http://emj.bmj.com/content/33/5/306.short 4100 - http://emj.bmj.com/content/33/5/306.full SO - Emerg Med J2016 May 01; 33