Patients
This study is a retrospective cohort study with a prospective follow-up by questionnaires of all patients that underwent a sialendoscopy at the <Blinded for review> department of Otorhinolaryngology, Head and Neck Surgery between March 2008 and June 2020.
Following an approval of the Research Ethics Committee (MP004975), the electronic files of 221 patients were searched for information about their sialendoscopic procedure and follow-up consultations. The same patients were also asked by mail to fill out a questionnaire. Non-responders where contacted again by phone and asked once more, if they agreed to fill out the questionnaire. Non-Belgian residents and patients who passed away were excluded.