1. The First Clinical College, Shandong University of Traditional Chinese Medicine, Jinan 250013, Shandong Province, China
2. School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250013, Shandong Province, China
3. Department of Anorectal, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250014, Shandong Province, China
4. School of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250013, Shandong Province, China
5. Department of Anorectal, China Academy of Chinese Medical Sciences Xiyuan Hospital, Beijing 100091, China