The effect of regularly dosed acetaminophen vs no acetaminophen on renal function in plasmodium knowlesi malaria (PACKNOW): a randomized, controlled trial by Cooper, DJ, Grigg, MJ, Plewes, K, Rajahram, GS, Piera, KA, William, T, Menon, J, Koleth, G, Edstein, MD, Birrell, GW, Wattanakul, T, Tarning, J, Patel, A, Yeo, TW, Dondorp, AM, Anstey, NM, Barber, BE