1. Department of Gastroenterology, Yidu Central Hospital of Weifang, Weifang, Shandong, China (mainland)
2. Department of Oncology, Yidu Central Hospital of Weifang, Weifang, Shandong, China (mainland)
3. Department of Neurology, Shouguang Hospital of Traditional Chinese Medicine, Weifang, Shandong, China (mainland)
4. Jinan Second People’s Hospital (The Ophthalmologic Hospital of Jinan), Jinan, Shandong, China (mainland)