1. School of Medicine, Texas Tech University Health Science Center, Lubbock, TX
2. Department of Internal Medicine, Texas Tech University Health Science Center, Lubbock, TX
3. Department of Surgery, Texas Tech University Health Science Center, Lubbock, TX
4. School of Pharmacy, Texas Tech University Health Science Center, Lubbock, TX
5. Department of Internal Medicine, Division of Nuclear Medicine Texas Tech University Health Science Center, Lubbock, TX,