1. Department of Geriatrics, Qilu Hospital of Shandong University, Jinan, PR China;
2. Department of Ophthalmology, The Affiliated Hospital of Taishan Medical University, Taian, PR China;
3. Department of Geriatrics, The Central Hospital of Taian, Taian, PR China;
4. Department of Pharmacy, Qilu Hospital of Shandong University, Jinan, PR China;
5. School of Pharmaceutical Sciences, Shandong University, Jinan, PR China