1. Graduate School, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China
2. The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan 410021, China
3. School of Continuing Education, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China
4. Ningxiang Hospital of Chinese Medicine, Ningxiang, Hunan 410399, China