[2022 US Symposium] #68 - "history of"

https://github.com/OHDSI/Themis/issues/68

Please use this spot to document:

  1. Describe the issue/topic?
  2. What do we know about this topic? What has been discussed?
  3. What are recommendations for how to handle this issue/topic?
  4. What next steps should be taken?

Related posts:
https://github.com/OHDSI/CommonDataModel/issues/400