1. Trimethoprim;Rich;Med J Aust,1985
2. Synergism between trimethoprim and sulfonamide in urine: does it exist?;Watson;Clin Ther,1981
3. Sulphonamides and trimethoprim;Reeves;Lancet,1982
4. Co-trimoxazole in pregnancy;Smithells;Lancet,1983
5. Aetiological monitor of congenital abnormalities. A case-control surveillance system;Czeizel;Acta Paediatr Hung,1983