https://www.operamagazine.nl/achtergrond/52000/shirley-apthorp-maakt-nu-operamondkapjes/?fbclid=IwAR1IVzdFNfPYSoKqnvTcmME83N1-JRw0lYRyoM4...

https://www.theguardian.com/commentisfree/2020/apr/04/why-wear-a-mask-may-be-our-best-weapon-to-stop-coronavirus?CMP=share_btn_tw&fbclid=...

https://medium.com/@Cancerwarrior/covid-19-why-we-should-all-wear-masks-there-is-new-scientific-rationale-280e08ceee71

https://www.nytimes.com/interactive/2020/health/coronavirus-best-face-masks.html?action=click&module=Top%20Stories&pgtype=Homepage&fbclid...