1. National ambulatory medical care survey: 2000 summary, national center for health statistics;Cherry;Vital. Health. Stat.,2000
2. Epidemiology and economic impact of rhinosinusitis;Anand;Ann. Otol. Rhinol. Laryngol. Suppl.,2004
3. Unilateral opacification of paranasal sinus CT scans;Ahsan;Otolaryngol. Head Neck Surg.,2005
4. The unilateral opaque maxillary sinus on computed tomography;Rudralingam;Br. J. Oral Maxillofac. Surg.,2002
5. Prognostic factors, outcomes and staging in ethmoid sinus surgery;Kennedy;Laryngoscope,1992