<prompt>  The development of resistance to conventional treatment has led WHO to recommend the use of combination therapies containing artemisinin derivative artemisinin-based combination therapies also known as ACTs. All of the following combination therapies are recommended if such resistance is suspected, except :Artemether plus lumefantrineArtesunate plus quinineArtesunate plus pyrimethamine-sulfadoxineArtesunate plus mefloquine 