[1] PRAXIS LAB MED,D-2300 KIEL,FED REP GER
[2] UNIV LAUSANNE,ECOLE PHARM,CH-1011 LAUSANNE,SWITZERLAND
[3] ST JOSEPH HOSP,CLIN CHEM & HEMATOL LAB,7000 AD DOETINCHEM,NETHERLANDS
[4] HANUSCH KRANKENHAUS WIENER GEBIETSKRANKENKASSE,A-1140 WIEN,AUSTRIA
[5] BOEHRINGER MANNHEIM GMBH,ERPROBUNG DIAGNOST,D-6800 MANNHEIM 31,FED REP GER