19.1. Consent to a request for access to a user’s record for study, teaching or research purposes must be in writing ; in addition, it must be free and enlightened and given for specific purposes. Otherwise, it is without effect.
The consent is valid only for the time required for the attainment of the purposes for which it was granted or, in the case of a research project approved by an ethics committee, for the period determined, where that is the case, by the ethics committee.