1. CNRS, Laboratoire Modélisation et Simulation Multiéchelle, UMR CNRS 8208, 94010 Créteil, France;
2. Graduate Periodontics, Department of Periodontics and Oral Medicine, University of Michigan, School of Dentistry, Ann Arbor, Michigan 48109
3. Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Stanford, California 94305
4. Emeritus, Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180