[1] Univ Calif San Diego, La Jolla, CA 92093 USA
[2] Leiden Univ, Med Ctr, Leiden, Netherlands
[3] Toronto Western Hosp, Toronto, ON M5T 2S8, Canada
[4] Univ Washington, Swedish Med Ctr, Seattle, WA 98195 USA
[5] Univ Glasgow, Glasgow, Lanark, Scotland
[6] Univ Utah, Hlth Sci Ctr, Salt Lake City, UT USA
[7] Centocor Res & Dev Inc, Biostat, Malvern, PA USA
[8] Centocor Res & Dev Inc, Immunol, Malvern, PA USA
[9] Univ Penn, Sch Med, Philadelphia, PA 19104 USA