Geographical variations in king cobra (Ophiophagus hannah) venom from Thailand, Malaysia, Indonesia and China: On venom lethality, antivenom immunoreactivity and in vivo neutraliza... by Tan, Kae Yi, Ng, Tzu Shan, Bourges, Aymeric, Ismail, Ahmad Khaldun, Maharani, Tri, Khomvilai, Sumana, Sitprija, Visith, Tan, Nget Hong, Tan, Choo Hock