Links
[1] https://www.sciensano.be/sites/default/files/diphtheria_2018_fr.pdf
[2] https://www.sciensano.be/nl/biblio?f%5Bauthor%5D=87197&f%5Bsearch%5D=Chlo%C3%A9%20Wyndham-Thomas
[3] https://www.sciensano.be/nl/biblio?f%5Bauthor%5D=88215&f%5Bsearch%5D=Helena%20Martini
[4] https://www.sciensano.be/nl/biblio?f%5Bauthor%5D=33081&f%5Bsearch%5D=Pi%C3%A9rard%2C%20Denis
[5] https://www.sciensano.be/nl/biblio?f%5Bkeyword%5D=1431&f%5Bsearch%5D=Belgian
[6] https://www.sciensano.be/nl/biblio?f%5Bkeyword%5D=17769&f%5Bsearch%5D=Diphtheria
[7] https://www.sciensano.be/nl/biblio?f%5Bkeyword%5D=23850&f%5Bsearch%5D=Diphtheria-Tetanus%20Vaccine
[8] https://www.sciensano.be/nl/biblio?f%5Bkeyword%5D=33399&f%5Bsearch%5D=Diphtheria-Tetanus-Pertussis%20Vaccine
[9] https://www.sciensano.be/nl/biblio?f%5Bkeyword%5D=1374&f%5Bsearch%5D=Surveillance
[10] https://www.sciensano.be/nl/gezondheidsonderwerpen/difterie