1 Vanderbilt University School of Medicine, Nashville, TN, United States of America.
2 Department of Plastic Surgery, Vanderbilt University Medical Center, Nashville, TN, United States of America; Center for Biomedical Ethics and Society, Vanderbilt University Medical Center, Nashville, TN, United States of America.
3 Department of Plastic Surgery, Vanderbilt University Medical Center, Nashville, TN, United States of America.
4 Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States of America. Electronic address: Douglas.b.johnson@vumc.org.