1. Massachusetts Institute of Technology, Boston, Massachusetts.
2. Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts.
3. R & D Medical, Air Liquide Santé International, Les-Loges-en-Josas, France.
4. Department of Mechanical Engineering, Lafayette College, Easton, Pennsylvania.
5. Delaware Research and Technology Center, American Air Liquide, Newark, Delaware.
6. Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, Canada.