[1] Univ Calif San Diego, La Jolla, CA 92093 USA
[2] Clin Univ St Luc, Louvain, Belgium
[3] Univ Autonoma Nuevo Leon, Leon, Spain
[4] Columbia Univ, Med Ctr, New York, NY 10027 USA
[5] Univ Alberta, Edmonton, AB, Canada
[6] Weill Cornell Med, New York, NY USA
[7] Univ Autonoma Barcelona, Barcelona, Spain
[8] Univ Barcelona, Barcelona, Spain
[9] Hosp Clin Barcelona, Barcelona, Spain
[10] Kings Coll London, London, England
[11] Hop Huriez, Lille, France
[12] Univ Wisconsin, Madison, WI 53706 USA
[13] Yale Univ, New Haven, CT 06520 USA
[14] Univ Pittsburgh, Pittsburgh, PA 15260 USA
[15] AlcHepNet, Indianapolis, IN USA