text_1: 我们 向 证实 符合 纳入 标准 且 症状 不 紧急 的 参与者 邮寄 了 ECG 监测 贴 ( ePatch ) , 由 参与者 佩戴 长达 7 天 .
  
text_2: participants whose eligibility was confirmed and whose symptoms were not urgent were mailed an ECG patch ( ePatch ) to wear for up to 7 days .
  