Department of Korean Preventive Medicine, College of Korean Medicine, Kyung Hee University, Seoul. Institute of Safety and Effectiveness Evaluation for Korean Medicine, Kyung Hee University, Seoul. Oriental Medicine Research Institute, College of Korean Medicine, Gachon University, Seongnam. Department of Korean Rehabilitation Medicine, College of Korean Medicine, Dongguk University, Seoul. Department of Oriental Rehabilitation Medicine, Gwangju Oriental Hospital of Dongshin University, Gwangju. Department of Korean Medicine Rehabilitation, Gwangju Medical Center, College of Korean Medicine, Wonkwang University, Gwangju. Department of Korean Rehabilitation Medicine, College of Korean Medicine, Kyung Hee University, Seoul. Center for Comparative Effectiveness Research & Economic Evaluation in Korean Medicine, Pusan National University, Yangsan. Department of Korean Rehabilitation Medicine, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea.