[1] CHU Lille, F-59037 Lille, France
[2] Univ Hosp Gasthuisberg, B-3000 Louvain, Belgium
[3] Univ Calif San Diego, La Jolla, CA 92093 USA
[4] Med Univ Vienna, Vienna, Austria
[5] Mayo Clin, Rochester, MN USA
[6] Anal Grp Inc, Boston, MA USA
[7] Abbott Labs, Abbott Pk, IL 60064 USA
[8] Abbott Labs Ltd, Maidenhead, Berks, England