200
Participants
Start Date
February 29, 2016
Primary Completion Date
November 30, 2017
Study Completion Date
November 30, 2017
Upper airway assessment, including nasal biopsy
St. Olavs Hospital, Trondheim
St. Olavs Hospital
OTHER
Haukeland University Hospital
OTHER
University of Copenhagen
OTHER
Norwegian University of Science and Technology
OTHER