My Translation, not sure what 'CRF' is short for though:
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I was wondering if you reconsidered your decision to participate in the study ENABLE CC.
Your participation would be greatly appreciated since your population of subjects includes 4 cases (1 case of TE and 3 cases of controls). Furthermore, no procedure is required for the subjects, all we need is a clear consent from them, which can be acquired by phone if its all right with your ethics committee.
I am also sending you a copy of the CRF. As mentioned previously, it will be an Electronic CRF.