1. Rudolph's Pediatrics.;Hazinski,2003
2. Nelson Textbook of Pediatrics. 17th ed.;Goodman,2004
3. Principles and Practice of Infectious Diseases. 6th ed.;Hall,2005
4. Kendig's Disorders of the Respiratory Tract in Children. 7th ed.;Wohl,2006
5. Bronchiolitis.;Smyth;Lancet,2006