1. Biomedical Ethics Research Program, Mayo Clinic, 200 First Street, SW, Rochester, MN 55905, USA
2. Center for Regenerative Medicine, Mayo Clinic, 200 First Street, SW, Rochester, MN 55905, USA
3. Mayo Clinic Alix School of Medicine, 200 First Street, SW, Rochester, MN 55905, USA
4. Center for Bioethics, School of Public Health & College of Pharmacy, University of Minnesota, N520 Boynton, 410 Church Street SE, Minneapolis, MN 55455, USA
5. School of History, Philosophy & Religion, Oregon State University, 322 Milam Hall, 2520 SW Campus Way, Corvallis, OR 97331, USA
6. Center for Regenerative Medicine, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA
7. Department of General Internal Medicine, Mayo Clinic, 200 First Street, SW, Rochester, MN 55905, USA
8. Department of Orthopedic Surgery, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA