Links
[1] https://www.sciensano.be/nl/biblio?f%5Bauthor%5D=807&f%5Bsearch%5D=B.%20De%20Smet
[2] https://www.sciensano.be/nl/biblio?f%5Bkeyword%5D=444&f%5Bsearch%5D=Belgi%C3%AB
[3] https://www.sciensano.be/nl/biblio?f%5Bkeyword%5D=1176&f%5Bsearch%5D=cosmetica
[4] https://www.sciensano.be/nl/biblio?f%5Bkeyword%5D=3093&f%5Bsearch%5D=survey
[5] https://www.sciensano.be/nl/biblio?f%5Bkeyword%5D=19617&f%5Bsearch%5D=whitening