1. K. Parfitt (Ed.) Martindale — The Complete Drug Reference, 33rd edn, Pharmaceutical Press, 1 Lambeth High Street, London SE1 7JN, UK, 2002, pp. 322 and 333.
2. Merck Index, 13th edn, Merck, USA, 1996, pp. 790, 1335, and 2001.
3. Physicians Desk Reference, 53rd edn, Medical Economics Company, USA, 1999.