1. Department of Biomedical Sciences; Texas A&M University; Baylor College of Dentistry; Dallas TX 75246 USA
2. Department of Applied Prosthodontics; Graduate School of Biomedical Sciences; Nagasaki University; 1-7-1, Sakamoto Nagasaki 852-8588 Japan
3. Department of Materials Science and Engineering; University of Texas at Arlington; Arlington TX 76019 USA
4. Department of Bioengineering; University of Texas at Arlington; Arlington TX 76019 USA
5. Center for Excellence in Hip Disorders; Texas Scottish Rite Hospital; Dallas TX 75219 USA
6. Department of Orthopaedic Surgery; University of Texas Southwestern Medical Center at Dallas; Dallas TX 75390 USA