1. Feigin RD, Cherry JD, Demmler GJ, Kaplan SL. Textbook of pediatric infectious diseases, 5th ed, vol. 1. Philidadelphia: Elsevier, 2004.
2. Hamilton B, Martin JA, Sutton PD. Births: preliminary data from 2003. National vital statistics report. Hyattsville, MD: National Center for Health Statistics, 2004.
3. Microbiology of bacterial respiratory infections
4. Otitis media
5. Viruses in asthma exacerbations