Hello!
I would really appreciate some help with the finding of a technical term for doing qualitative interviews, but not with the person that has first-hand experience with something, but a secondary (expert) source. So for example, if instead of talking to person that suffered trauma about PTSD experience, I speak to a psychologist or counselor that has a lot of experience with this topic and has seen a lot of people and can summarise and give an insight of different perspectives from an expert angle.

If you know of articles using this approach, I would be really grateful if you could share them as well!
Thank you very much!