1Busetti M, Longo B ,Campello C. Low rates of antimicrobial re- sistance in respiratory pathogens from a pediatric population in North-eastern Italy[J]. Pediatr Med Chir,2003,25(2):131-4.
2Lagerstmm F,Bader M,Foldevi M,et al. Microbiological etiology in clinically diagnosed community-acquired pneumonia in primary care in Orebro,Sweden[J]. Clin Microbiol Infect. 2003,9(7):645-52.
3Makela PH. Conjugate vaccines-a breakthrough in vaccine de- velopment[J]. Southeast Asian J Trop Med Public Heahh,2003, 34(2):249-53.
4Rosinska M,Zielinski A. In process citation[J]. Przegl Epide- miol, 2003,57(1):57-65.
5Russell FM ,Buttery J. Vaccine development for capsulate bac- teria causing pneumonia[J]. Curr Opin Pulm Med,2003,9(3): 227-32.