Hainan Medical University, Hainan Medical University, Hainan Medical University, Shanxi Bethune Hospital, Hainan Medical University, Hainan Medical University, Hainan Medical University, Hainan University - Engineering Technology Research Center for Elderly Health Management, Hainan Medical University, Hainan University, Hainan Medical University, Hainan Medical University and Hainan Medical University