RT null T1 World Medical Association K1 mercury YR 2008 FD 2008-11 LK https://wedocs.unep.org/handle/20.500.11822/12735 UL https://wedocs.unep.org/handle/20.500.11822/12735 NO World Medical Association NO https://www.unep.org/chemicalsandwaste/Portals/9/Mercury/Documents/PartneshipsAreas/PartneshipsLetters/WMA.pdf DS UN Environment Document Repository RD Sep 19, 2026