1. Department of Orthopaedics, RAYO, Carlisle Center for Bone and Mineral Imaging, School of Medicine, University of Texas Health Science Center at San Antonio, USA
2. Dunn Dental Clinic, Lackland Air Force Base, San Antonio, TX, USA
3. Department of Biologic and Materials Sciences, University of Michigan, Dental Research Lab, Ann Arbor, MI, USA
4. Department of Anatomy & Cell Biology, McGill University, Montreal, PQ, Canada
5. Department of Periodontics, Dental School, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA