3. Once natural persons have exercised the right to opt out, and where personal electronic health data relating to them can be identified in a dataset, personal electronic health data relating to those natural persons shall not be made available or otherwise processed pursuant to data permits issued under Article 68 or health data requests under Article 69 approved after the natural person has exercised the right to opt out.
The first subparagraph of this paragraph shall not affect the processing for secondary use of personal electronic health data relating to those natural persons pursuant to data permits or health data requests that were issued or approved before the natural persons exercised their right to opt out.