1. School of Medicine, Meharry Medical College, 1005 Doctor D.B. Todd Junior Boulevard, Nashville, TN 37208, USA
2. Department of Plastic Surgery, Vanderbilt University Medical Center, 1211 Medical Center Drive, Nashville, TN 37232, USA
3. Weldon School of Biomedical Engineering, Purdue University, 206 Martin Jischke Drive, West Lafayette, IN 47907, USA
4. Department of Biostatistics, Vanderbilt University School of Medicine, 2323 Medical Center North, Nashville, TN 37232–2158, USA
5. School of Medicine, Vanderbilt University, 1161 21st Ave S # D3300, Nashville, TN 37232, USA
6. Division of Trauma and Surgical Critical Care, Vanderbilt University Medical Center, 1211 Medical Center Drive, Nashville, TN 37232, USA