1. School of Optometry and Ophthalmology and the Eye Hospital, Wenzhou Medical University, State Key Laboratory of
Optometry, Wenzhou, Zhejiang 325003, P.R. China
2. Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock
AR, USA
3. Geriatric Research, Education & Clinical Center, Central Arkansas Veterans Healthcare System, Little Rock
AR, USA
4. College of Life and Environmental Sciences, Wenzhou University,
Wenzhou, Zhejiang, P.R. China