1. School of Medicine, Texas Tech University Health Sciences Center, Lubbock
2. Department of Ophthalmology and Visual Sciences, Texas Tech University Health Sciences Center, Lubbock
3. Selenium Ltd, Austin, Texas
4. Division of Otolaryngology–Head and Neck Surgery, Department of Surgery, Texas Tech University Health Sciences Center, Lubbock
5. Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock