Baseline assessment was performed for all subjects during the screening period. On the first day of treatment, the first week after treatment (± 2 days), the second week (± 2 days), the 4th week (± 5 days), the 6th week (± 5 days), the 8th week (± 5 days),the 12th week (± 5 days), the 16th week (± 5 days) for visit.The 3th week (± 2 days), the 5th week (± 5 days), the 7th week (± 5 days), the 10th week (± 5 days), the 14th week (± 5 days), for telephone interviews.