《Table 1 Patients allocation》

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《定心方联合胺碘酮治疗室性早搏:一项随机、双盲、多中心、安慰剂对照试验（英文）》

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This trial was conducted at 7 centers in China from July2012 to December 2013（Table 1）.The primary objective was to assess the efficacy of DXR combined with amiodarone for the treating of PVCs.The secondary objective was to assess the safety and tolerability of DXR combined with amiodarone in this relevant patient population.The study protocol，approved by the institutional review board of each institution，was conducted in accordance with the Declaration of Helsinki.Informed consent was obtained from all patients before entering the trial.Patients were free to withdraw from the trial at any time.An independent steering committee of academic physicians was responsible for the design and conduct of the trial，data analysis，and reporting of the trial.A data monitoring committee oversaw the safety of patients.This trial is registered with the Chinese Clinical Trial Registry.The protocol identification number at http://www.chictr.org.cn is ChiCTR-TRC-12002794.