[1] Northwestern Univ, Chicago, IL 60611 USA
[2] Sanofi, Chilly Mazarin, France
[3] Univ Miami, Miami, FL USA
[4] Washington Univ, St Louis, MO USA
[5] Oregon Hlth & Sci Univ, Portland, OR 97201 USA
[6] Sanofi Genzyme, Cambridge, MA USA
[7] Regeneron Pharmaceut Inc, 777 Old Saw Mill River Rd, Tarrytown, NY 10591 USA