This study was conducted between June 28 , 2010 , and September 25 , 2013.400 infants were enrolled and 393 randomized at 6 mo of age to no chemoprevention , monthly sulfadoxine-pyrimethamine ( SP ) , daily trimethoprim-sulfamethoxazole ( TS ) , or monthly dihydroartemisinin-piperaquine ( DP ) .