[1] SUNDSVALL HOSP,DEPT INFECT,SUNDSVALL,SWEDEN
[2] UNIV ZURICH,INST MED MIKROBIOL,CH-8028 ZURICH,SWITZERLAND
[3] UNIV LIBRE BRUXELLES,INST JULES BORDET,KANTONSSPITAL,MED B KLIN,B-1000 BRUSSELS,BELGIUM
[4] UNIV LIBRE BRUXELLES,INST JULES BORDET,B-1000 BRUSSELS,BELGIUM
[5] HOP CLAUDE BERNARD,F-75019 PARIS,FRANCE
[6] UNIV CALIF LOS ANGELES,DEPT MED,DIV INFECT DIS,LOS ANGELES,CA 90024
[7] DUDLEY RD HOSP,DEPT MED MICROBIOL,BIRMINGHAM B18 7QH,W MIDLANDS,ENGLAND
[8] SOUTHMEAD GEN HOSP,DEPT MED MICROBIOL,BRISTOL BS10 5NB,ENGLAND
[9] BRISTOL LABS,BRUXELLES,BELGIUM
[10] HOP CANTONAL,DEPT MED,DIV MALAD INFECT,CH-1211 GENEVA 4,SWITZERLAND
[11] MAYO CLIN & MAYO FDN,DEPT MICROBIOL,ROCHESTER,MN 55901
[12] UNIV ANTWERP HOSP,DEPT NEPHROL,ANTWERP,BELGIUM
[13] BRISTOL MYERS CO,DIV INT,NEW YORK,NY
[14] UNIV BERN,INSELSPITAL,KINDERKLIN,CH-3010 BERN,SWITZERLAND
[15] RUSH PRESBYTERIAN ST LUKES MED CTR,RUSH MED COLL,DEPT MED,INFECT DIS SECT,CHICAGO,IL 60612