Limited polymorphism in the dihydrofolate reductase (dhfr) and dihydropteroate synthase genes (dhps) of Plasmodium knowlesi isolate from Thailand - Sangsri, R; Choowongkomon, K; Tuntipaiboontana, R; Sugaram, R; Boondej, P; Sudathip, P; Dondorp, AM; Imwong, M (Acta Tropica, 2023)