[1] Otto Wagner Hosp, Internal Dept, A-1140 Vienna, Austria
[2] Pneumol Practice, A-6800 Feldkirch, Austria
[3] Pneumol Practice, A-2500 Baden, Austria
[4] Pneumol Practice, A-8010 Graz, Austria
[5] Nycomed Deutschland GmbH, Dept Med, Constance, Germany
[6] Nycomed Pharma GmbH, Med Dept, A-1120 Vienna, Austria