1675483 SXT sulfamethoxazole-trimethoprim 73 445177 ST sulfamethoxazole-trimethoprim 63 3536787 SMZ-TMP sulfamethoxazole-trimethoprim 22 3349501 SMX-TMP sulphamethoxazole and trimethoprim 4 3942105 SMX/TMP sulfamethoxazole and trimethoprim 2