1. Department of Ophthalmology and Visual SciencesSchool of Medicine and Public Health, University of Wisconsin – Madison Madison Wisconsin U.S.A.
2. Institute of StatisticsNational Chiao Tung University Hsinchu Taiwan
3. Division of Epidemiology and Community HealthUniversity of Minnesota Minneapolis Minnesota U.S.A.
4. Department of Laboratory Medicine and PathologyUniversity of Minnesota Minneapolis Minnesota U.S.A.
5. Department of Population Health SciencesSchool of Medicine and Public Health, University of Wisconsin – Madison Madison Wisconsin U.S.A.