Are you are a researcher or journalist looking for any connection between Vitamin D and COVID-19 ?
If yes, here is a great summary listing:
Always check at VitaminDwiki: https://vitamindwiki.com/
Always check at Grass Roots Health: https://www.grassrootshealth.net/
To check the recording of my discussions with 4 world experts, go to YouTube and search for VitaminDUK