http://www.lecese.fr/sites/default/files/pdf/Fiches/2017/FI13_raef.pdf http://www.lecese.fr/images/colloque/RAEF2017/RAEFVersionSection2.pdf
https://www.occrp.org/en/coronavirus/uncertain-diagnosis-the-murky-global-market-for-coronavirus-antibody-tests
http://jdmichel.blog.tdg.ch/archive/2020/03/18/covid-19-fin-de-partie-305096.html