1. Epidemiology and economic impact of rhinosinusitis;Anand;Ann Otol Rhinol Laryngol,2004
2. Summary health statistics for U.S. adults: National Health Interview Survey, 1998. National Center for Health Statistics;Pleis;Vital Health Stat,2002
3. Sinusitis: bench to bedside. Current findings, future directions;Kaliner;Otolaryngol Head Neck Surg,1997
4. Ambulatory care visits to physician offices, hospital outpatient departments, and emergency departments: United States, 2001-02. National Health Center for Health Statistics;Schappert;Vital Health Stat 13.,2006
5. The diagnosis and management of sinusitis: a practice parameter update;Slavin;J Allergy Clin Immunol,2005