1 Betts RF. Antiviralagents in respirafory infections.[J].semin Respir Infect,1991,6(3):147.
2 Marr JJ, Moffte HL, Kunin CM. Gaidelines for improvinp the use of antimierobialagents: a statement by the Infectious Disease Society of Ameriea[J]. J InfectDis,1988,157:869.
3 Mylott JM, Ksiazek S, Bentlcy DW. Rational approach to the antibiotic treatmcntof pneumonia in the elderly[J]. Drag Aging,1994,4:21.