[1] Univ Pisa, Dipartimento Cardiotorac Resp Pathophysiol, Pisa, Italy
[2] Boehringer Ingelheim Pharma GmbH & Co KG, TA Resp Dis, Ingelheim, Germany
[3] Univ Hosp Dubrava, Zagreb, Croatia
[4] Pneumol Pract Forstner MD, Wels, Austria
[5] Men Care Szazhalom Hlth Ctr, Szazhalombatta, Hungary
[6] Boehringer Ingelheim Pharmaceut Inc, Ridgefield, CT 06877 USA
[7] Boehringer Ingelheim RCV GmbH & Co KG, Clin Dev, Vienna, Austria