1. Acute respiratory infection: a global challenge;Campbell;Arch Dis Child,1995
2. Common Cold;Eccles,2009
3. Rhinovirus colds: epidemiology, clinical characteristics and transmission;Gwaltney;Eur J Respir Dis,1983
4. Epidemiology of viral respiratory infections;Monto;Am J Med,2002
5. Prevention and control of influenza: recommendations of the Advisory Committee on Immunization Practices (ACIP);Centers for Disease Control and Prevention;MMWR Morb Mortal Wkly Rep,2006