[1] Univ Utah, Sch Med, Salt Lake City, UT USA
[2] CHU Nantes, Hop Nord Laennec, St Herblain, France
[3] Hosp Pitie Salpetriere, Paris, France
[4] Univ Lille 2, Lille, France
[5] Regeneron Pharmaceut Inc, 777 Old Saw Mill River Rd, Tarrytown, NY 10591 USA