Riechelmann, H External nasal valve collapse - a case-control and interventional study employing a novel internal nasal dilator (Nasanita). [electronic resource] - Rhinology Jun 2010 - 183-8 p. digital Publication Type: Journal Article ISSN: 0300-0729 Standard No.: 10.4193/Rhin09.121 doi Subjects--Topical Terms: AdultAgedCase-Control StudiesDilatation--instrumentationFemaleHumansMaleMiddle AgedNasal Cavity--surgeryNasal Obstruction--surgeryRhinomanometryRhinoplasty--instrumentationTreatment Outcome