1. Rosekrans JA. Viral croup: current diagnosis and treatment. Mayo Clin Proc. 1998;73:1102-1107. 2. Denny FW, Murphy TF, Clyde WA Jr, Collier AM, Henderson FW. Croup: an 11-year study in a pediatric practice. Pediatrics. 1983;71:871-876. 3. Johnson DW, Jacobson S, Edney PC, Hadfield P, Mundy ME, Schuh S. A comparison of nebulized budesonide, intramuscular dexamethasone, and placebo for moderately severe croup. N Engl J Med. 1998;339:498-503. 4. Klassen TP, Feldman ME, Watters LK, Sutcliffe T, Rowe PC. Nebulized budesonide for children with mild-to-moderate croup. N Engl J Med. 1994;331:285-289. 5. Ausejo M, Saenz A, Pham B, et al. The effectiveness of glucocorticoids in treating croup: meta-analysis. BMJ. 1999;319:595-600. 6. Kairys SW, Olmstead EM, O''Connor GT. Steroid treatment of laryngotracheitis: a meta-analysis of the evidence from randomized trials. Pediatrics. 1989;83:683-693. 7. Tibballs J, Shann FA, Landau LI. Placebo-controlled trial of prednisolone in children intubated for croup. Lancet. 1992;340:745-748. 8. Bjornson CL, Klassen TP, Williamson J, et al. A randomized trial of a single dose of oral dexamethasone for mild croup. N Engl J Med. 2004;351:1306-1313. 9. Greally P, Cheng K, Tanner MS, Field DJ. Children with croup presenting with scalds. BMJ. 1990;301:113. 10. Henry R. Moist air in the treatment of laryngotracheitis. Arch Dis Child. 1983;58:577. 11. Couriel JM. Management of croup. Arch Dis Child. 1988;63:1305-1308. 12. Skolnik NS. Treatment of croup: a critical review. AJDC. 1989;143:1045-1049. 13. Dulfano MJ, Adler K, Wooten K. Physical properties of sputum, IV: effects of 100 per cent humidity and water mist. Am Rev Respir Dis. 1973;107:130-132. 14. Sasaki CT, Suzuki M. The respiratory mechanism of aerosol inhalation in the treatment of partial airway obstruction. Pediatrics. 1977;59:689-694. 15. Ophir D, Elad Y. Effects of steam inhalation on nasal patency and nasal symptoms in patients with the common cold. Am J Otolaryngol. 1987;8:149-153. 16. Szilagyi PG. Humidifiers and other symptomatic therapy for children with respiratory tract infections. Pediatr Infect Dis J. 1991;10:478-479. 17. Westley CR, Cotton EK, Brooks JG. Nebulized racemic epinephrine by IPPB for the treatment of croup—a double blind study. AJDC. 1978;132:484-487. 18. Kristjansson S, Berg-Kelly K, Winso E. Inhalation of racemic adrenaline in the treatment of mild and moderately severe croup: clinical symptom score and oxygen saturation measurements for evaluation of treatment effects. Acta Pediatr. 1994;83:1156-1160. 19. Jamshidi PB, Kemp JS, Peter JR, et al. The effect of humidified air in mild to moderate croup: evaluation using croup scores and respiratory inductance plethysmography [abstract]. Acad Emerg Med. 2001;8:417. 20. Neto GM, Kentab O, Klassen TP, Osmond MH. A randomized controlled trial of mist in the acute treatment of moderate croup. Acad Emerg Med. 20