234
Participants
Start Date
January 1, 2022
Primary Completion Date
August 22, 2024
Study Completion Date
December 31, 2030
Mecobalamin 5 MG Disintegrating Oral Tablet
Mecobalamin 0.5mg / time, 3 times / day,was taken continuously for 6 months
placebo
placebo 0.5mg / time, 3 times / day,was taken continuously for 6 months
Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou
Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University
OTHER