1. Division of Cardiovascular Medicine; Department of Medicine; Stanford University School of Medicine; Palo Alto CA
2. Kaiser Northern California Division of Research; Oakland CA
3. California Transplant Donor Network; Oakland CA
4. Graduate School of Nursing, Midwifery, and Health; Victoria University of Wellington; Wellington New Zealand
5. Department of Biostatistics and Bioinformatics; Duke University School of Medicine; Durham NC