110
Participants
Start Date
November 30, 2022
Primary Completion Date
November 30, 2025
Study Completion Date
November 30, 2025
laser treatment
a maximum of 4 sessions, with an interval of 3 to 4 weeks
cryotherapy
a maximum of 4 sessions, with an interval of 3 to 4 weeks
The 306 Hospital of People's Liberation Army
OTHER