I see no problem with this.

We use an eCRF system and we create 'source data worksheets' that form part of the patients medical records ultimately. That way, the medical notes are source and contain all research data, it is then transcribed to the eCRF system online and no photocopying is needed. At the end of the trial, only the eCRF needs to be retained as research records and the source data worksheets can remain in the medical records at site - cutting down on the hassle of archiving them locally.

Seems to work well - we've been doing this since 2005.

CTU