1. Department of Pathology; University of Manitoba; Winnipeg; MB; Canada
2. Department of Internal Medicine; University of Nebraska Medical Center; Omaha; NE; USA
3. Human Genetics Laboratory; Munroe-Meyer Institute; University of Nebraska Medical Center; Omaha; NE; USA
4. Department of Biostatistics; University of Nebraska Medical Center; Omaha; NE; USA
5. Department of Pathology; City of Hope National Medical Center; Duarte; CA; USA
6. Department of Pathology and Microbiology; University of Nebraska Medical Center; Omaha; NE; USA