PT - JOURNAL ARTICLE AU - Arthur Darmon AU - Gregory Ducrocq TI - Early stopping of a randomised trial for efficacy: a medical, ethical and regulatory challenge AID - 10.1136/heartjnl-2021-318941 DP - 2021 Jul 01 TA - Heart PG - 1109--1110 VI - 107 IP - 14 4099 - http://heart.bmj.com/content/107/14/1109.short 4100 - http://heart.bmj.com/content/107/14/1109.full SO - Heart2021 Jul 01; 107