"In the decade from 1935-1945, while the Second World War raged in Europe, a new class of medicines capable of controlling bacterial infections launched a therapeutic revolution that continues today. The new medicines were not penicillin and antibiotics, but sulfonamides, or sulfa drugs. The sulfa drugs preceded penicillin by almost a decade, and during World War II they carried the main therapeutic burden in both military and civilian medicine. Their success stimulated a rapid expansion of research and production in the international pharmaceutical industry, raised expectations of medicine, and accelerated the appearance of new and powerful medicines based on research. The latter development created new regulatory dilemmas and unanticipated therapeutic problems. The sulfa drugs also proved extraordinarily fruitful as starting points for new drugs or classes of drugs, both for bacterial infections and for a number of important non-infectious diseases...." (Publisher).