270
Participants
Start Date
July 1, 2025
Primary Completion Date
May 31, 2027
Study Completion Date
May 31, 2027
ABC
Suction sampling should be conducted in the sequence of dry-suction, slow-pull and wet-suction.
ACB
Suction sampling should be conducted in the sequence of dry-suction, wet-suction and slow-pull.
BAC
Suction sampling should be conducted in the sequence of slow-pull, dry-suction and wet-suction.
BCA
Suction sampling should be conducted in the sequence of slow-pull, wet-suction and dry-suction.
CAB
Suction sampling should be conducted in the sequence of wet-suction, dry-suction and slow-pull.
CBA
Suction sampling should be conducted in the sequence of wet-suction, slow-pull and dry-suction.
Changhai Hospital, Shanghai
Changhai Hospital
OTHER