's Hosatd. Kyung Hee Unryerstty. Seoul. Repubk of Korea. 'Correspondence: Tae-Hun Kim. Korean Medicine Ctital Trial Center, Korean Medkine Hosplat Kywg Hee University. Scout Repubk of Korea (e-mail: tsehunaimfekhu.ac.kr). Copyright an 2018 the Author(s). Pubrehed by Wolters KMve• Health. Inc. This is an open acc