| William R Ryan Safety of a preservative-free acidified saline nasal spray: a randomized, double-blind, placebo-controlled, crossover clinical trialWilliam R Ryan Division of Rhinology, Department of Otolaryngology Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA Arch Otolaryngol Head Neck Surg 136:1099-103. 2010 Correlations between symptoms, nasal endoscopy, and in-office computed tomography in post-surgical chronic rhinosinusitis patientsWilliam R Ryan Department of Otolaryngology Head and Neck Surgery, Stanford School of Medicine, Stanford, California 94305, USA Laryngoscope 121:674-8. 2011 Intraoperative tumor localization with surgeon-performed ultrasound-guided needle dye injectionWilliam R Ryan Division of Head and Neck and Endocrine Surgery, Department of Otolaryngology Head and Neck Surgery, University of California San Francisco, San Francisco, California 94115, USA Laryngoscope 121:1651-5. 2011
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