Huazhong University of Science and Technology - Department of Stomatology, Huazhong University of Science and Technology - Department of Stomatology, Huazhong University of Science and Technology - Department of Stomatology, Huazhong University of Science and Technology - Department of Stomatology, Peking University - Department of Geriatric Dentistry, Huazhong University of Science and Technology - Department of Clinical Laboratory, Huazhong University of Science and Technology - Department of Stomatology, Huazhong University of Science and Technology - Department of Stomatology, Huazhong University of Science and Technology - Department of Clinical Laboratory, Huazhong University of Science and Technology - Department of Respiratory and Critical Care Medicine, Huazhong University of Science and Technology - Research Center for Tissue Engineering and Regenerative Medicine and Capital Medical University - Salivary Gland Disease Center