200
Participants
Start Date
May 1, 2019
Primary Completion Date
June 1, 2020
Study Completion Date
August 1, 2020
Ultrasound-Guided Superficial Cervical Plexus Block
Ultrasound-Guided Superficial Cervical Plexus Block
Landmark-Based Superficial Cervical Plexus Block
Landmark-Based Superficial Cervical Plexus Block
Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine, Cangzhou
Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine
OTHER