Koh Iwasaki M.D., Ph.D., a clinician and clinical researcher in traditional Asian medicine belongs to the Center for Asian traditional medicine, Tohoku University, Sendai, Japan. I edited the article of yokukansan, a traditional Asian herbal medicine on 22 May 2010. I am also one of the authors of scientific reports referred in the article. Therefore, I disclose my basic information above to take on my responsibility for the editing.