[1] UNIV LUND, MALMO GEN HOSP, S-21401 MALMO, SWEDEN
[2] TEMPLE UNIV, CTR HLTH SERV, PHILADELPHIA, PA 19122 USA
[3] ENGLEWOOD HOSP, ENGLEWOOD, NJ 07631 USA
[4] NORTHWESTERN UNIV, SCH MED, CHICAGO, IL 60611 USA
[5] UNIV TEXAS, HLTH SCI CTR, DALLAS, TX 75235 USA
[6] UNIV ARIZONA, ARIZONA HLTH SCI CTR, TUCSON, AZ 85724 USA
[7] UNIV CALIF LOS ANGELES, CTR HLTH SCI, LOS ANGELES, CA 90024 USA
[8] UNION UNIV ALBANY MED COLL, ALBANY, NY 12208 USA