1. From the Department of Laboratory Medicine and Pathology (Roden, Boland, Aubry, Lo, Maleszewski, Moyer, Yi, Bois), Mayo Clinic Rochester, Rochester, Minnesota.
2. From the Department of Radiology (Johnson), Mayo Clinic Rochester, Rochester, Minnesota.
3. From the Department of Laboratory Medicine and Pathology, Mayo Clinic Arizona, Scottsdale (Butt, Larsen, Tazelaar, Smith).
4. From the Department of Laboratory Medicine and Pathology, Mayo Clinic Florida, Jacksonville (Khoor).
5. From the Division of Critical Care and Pulmonary Medicine (Moua), Mayo Clinic Rochester, Rochester, Minnesota.
6. From the Department of Quantitative Health Sciences (Jenkins), Mayo Clinic Rochester, Rochester, Minnesota.