https://theconversation.com/handle-with-care-the-worlds-five-deadliest-poisons-56089
https://www.valuewalk.com/2018/12/top-10-deadliest-poisons-world/
https://en.wikipedia.org/wiki/Brodifacoum
https://en.wikipedia.org/wiki/Tetrodotoxin
https://en.wikipedia.org/wiki/Cyanide
https://en.wikipedia.org/wiki/Strychnine
https://en.wikipedia.org/wiki/Ricin
https://en.wikipedia.org/wiki/VX_(nerve_agent)
https://en.wikipedia.org/wiki/Batrachotoxin
https://en.wikipedia.org/wiki/Maitotoxin
https://en.wikipedia.org/wiki/Botulinum_toxin
https://en.wikipedia.org/wiki/Polonium