158
Participants
Start Date
December 1, 2020
Primary Completion Date
December 31, 2023
Study Completion Date
June 30, 2024
Theophylline 200 mg
taking theophylline (400 mg twice a day) and performing olfactory training for 6 months
olfactory training
performing olfactory training for 6 months
Taichung Veterans General Hospital, Taichung
Taichung Veterans General Hospital
OTHER