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Long term changes to olfactory function

Welcome back! If this is your second time filling the survey, please make sure you input the same Six-digit code you put before! We appreciate your continued participation in our study. Below you will find a list of questions regarding changes in your olfactory function over the past 9 months, with a focus on parosmia and phantosmia. There are no right or wrong answers. Please respond according to your situation and DO NOT skip any questions.

There are 37 questions in this survey.