Dose of antivenom for the treatment of snakebite with neurotoxic envenoming: Evidence from a randomised controlled trial in Nepal by Alirol, E, Sharma, S, Ghimire, A, Poncet, A, Combescure, C, Thapa, C, Paudel, V, Adhikary, K, Taylor, W, Warrell, D, Kuch, U, Chappuis, F