1. College of Nursing, Brigham Young University , Provo, Utah , USA
2. School of Family Life, Brigham Young University , Provo, Utah , USA
3. School of Public Health, Brigham Young University , Provo, Utah , USA
4. Department of Ophthalmology and Visual Sciences, University of Utah , Salt Lake City, Utah , USA
5. Department of Ophthalmology and Visual Sciences, University of Michigan , Ann Arbor, Michigan , USA
6. Department of Preventive Medicine and Population Health, University of Texas , Galveston, Texas , USA