[1] KAROLINSKA INST,WHO,COLLABORATING CTR DRUG UTILIZAT RES,HUDDINGE,SWEDEN
[2] KAROLINSKA INST,CLIN PHARMACOL SERV,HUDDINGE,SWEDEN
[3] STATE INST DRUG CONTROL,PRAGUE,CZECH REPUBLIC
[4] STATE INST DRUG CONTROL,BUCHAREST,ROMANIA
[5] COMENIUS UNIV BRATISLAVA,DEPT ORG & MANAGEMENT PHARM,BRATISLAVA,SLOVAKIA
[6] VILNIUS STATE UNIV,DEPT PHARMACOL & MICROBIOL,VILNIUS,LITHUANIA
[7] NATL INST PHARM,BUDAPEST,HUNGARY
[8] INST PUBL HLTH,LJUBLJANA,SLOVENIA
[9] INST DRUG RES,SOFIA,BULGARIA