Artesunate-mefloquine versus chloroquine for treatment of uncomplicated Plasmodium knowlesi malaria in Malaysia (ACT KNOW): An open-label, randomised controlled trial by Grigg, M, William, T, Menon, J, Dhanaraj, P, Barber, B, Wilkes, C, von Seidlein, L, Rajahram, G, Pasay, C, McCarthy, J, Price, R, Anstey, N, Yeo, T