1. School of Clinical Medicine, Weifang Medical University, Weifang 261053, China
2. Department of Bioscience and Technology, Weifang Medical University, 7166# Baotong West Street, Weifang 261053, China
3. Library, Weifang Medical University, 7166# Baotong West Street, Weifang 261053, China
4. Department of Physical Education, School of Foundation Medical, Weifang Medical University, Weifang 261053, China
5. The Department of Health Care/The Third Department of Geriatrics, Weifang People’s Hospital, No. 151, Guangwen Street, Kuiwen District, Weifang 261041, China