I run freesewing.org, the website linked to in the Forbes article (1). The university hospital here in Antwerp where I live is actively reaching out to the community asking them to make masks. (2) I'm not a scientist, but here's something that I can do, so I'm trying to help. I trust the doctors, that's good enough for me.

(1) https://www.forbes.com/sites/tjmccue/2020/03/20/calling-all-... (2) https://www.uza.be/mondmaskers. (in Dutch)