van Egmond, HPJonker, KMPoelman, MScherpenisse, PStern, AGWezenbeek, PBergwerff, AAvan den Top, HJ2025-03-182025-03-18200415204557https://rivm.openrepository.com/handle/10029/640537Proficiency studies on the determination of paralytic shellfish poisoning toxins in shellfishArticleFood Addit Contam 2004; 21:331-402025-03-18