1. R.E. McGrew and M.P. McGrew (1985)Encyclopedia of Medical History, McGraw-Hill, USA.
2. G.L. Mandell, R.G. Douglas, Jr. and J.E. Bennett (Eds) (1990)Principles and Practice of Infectious Diseases, 3rd edn, Churchill Livingstone, New York.
3. J.C. Sherris (Ed.) (1990)Medical Microbiology: An Introduction to Infectious Diseases, 2nd edn, Appleton & Lange, Norwalk, CT.
4. P.D. Hoeprich (Ed.) (1983)Infectious Diseases, 3rd edn, Harper & Row, Philadelphia, PA.
5. G.A. Jacoby and G.L. Archer (1991) in ‘New mechanisms of bacterial resistance to antimicrobial agents’, F.H. Epstein (Ed.)New England J. Med., 324, 601.