1. Division of Plastic and Reconstructive Surgery, University of Texas Health Science Center at San Antonio, San Antonio, Texas.
2. Extremity Trauma and Regenerative Medicine Task Area, United States Army Institute of Surgical Research, Houston, Texas.
3. Department of Epidemiology and Biostatistics, University of Texas Health Science Center at San Antonio, San Antonio, Texas.
4. Department of Cellular and Structural Biology, University of Texas Health Science Center at San Antonio, San Antonio, Texas.