Dihydropteroate SynthaseSulfanilamidesSulfamonomethoxineSulfadimethoxineSulfamethoxazolePneumocystisSulfathiazoles4-Aminobenzoic AcidPneumocystis InfectionsDapsoneSulfonamidesAnti-Infective AgentsPneumocystis jiroveciiPneumonia, PneumocystisSulfur CompoundsTrimethoprim-Sulfamethoxazole CombinationDrug Resistance, FungalSulfonesSulfuric AcidsDrug HypersensitivityMutationAnti-Bacterial AgentsEscherichia coli