1. College of First Clinical Medical, Shandong University of Traditional Chinese Medicine, Jinan, P.R. China
2. Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, P.R. China
3. Rizhao Hospital of Traditional Chinese Medicine, Rizhao, P.R. China
4. Jinan Vocational College of Nursing, Jinan, P.R. China
5. College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, P.R. China.