1. Department of Animal and Food Sciences, College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock, Texas 79409-2141
2. Integrated Livestock Management, Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, 1678 Campus Delivery, Colorado 80523-1678
3. Division of Pediatric Critical Care, University of Colorado at Denver and Health Sciences Center, Denver, Colorado, 80045
4. Department of Animal Sciences, The College of Agricultural Sciences, Colorado State University, Fort Collins, Colorado 80523-1171