Tae-Hun Kim1, Myeong Soo Lee2, Terje Alraek3. 1. Korean Medicine Clinical Trial Center, Korean Medicine Hospital, Kyung Hee University, Seoul, Republic of Korea. 2. Clinical Research Division, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea; Allied Health Sciences, London South Bank University, London, UK. Electronic address: mslee@kiom.re.kr. 3. Kristiania University College, Institute of Health Sciences, Oslo, Norway; National Research Centre in Complementary and Alternative Medicine, Faculty of Medicine, Department of Community Medicine, UiT The Arctic University of Norway, Tromso, Norway.