1. INRIA Paris; 2 Rue Simone IFF 75012 Paris France
2. Sorbonne Universités, UPMC Univ. Paris 6; Laboratoire Jacques-Louis Lions; 75252 Paris France
3. Medical R&D, WBL Healthcare; Air Liquide Santé International; 1 Chemin de la Porte des Loges 78350 Les Loges-en-Josas France
4. Department of Mechanical Engineering; Lafayette College; Easton PA 18042 USA