1 School of Health Sciences, Kristiania University College, Oslo, Norway.
2 Division of Clinical Medicine, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea.
3 Korean Medicine Clinical Trial Center, Korean Medicine Hospital, Kyung Hee University, Seoul, Republic of Korea.
4 Department of Community Medicine, Faculty of Medicine, National Research Center in Complementary and Alternative Medicine, UiT The Arctic University of Norway, Tromso, Norway.