1. Fondazione Don Gnocchi, I-50020 Pozzolatico;
2. Centro di Bioingegneria, Fondazione Don Gnocchi e Politecnico, I-20148 Milano;
3. Dipartimento di Bioingegneria, Politecnico di Milano, 32 I-20133 Milano, Italy;
4. University of Geneva, CH-1211 Geneva, Switzerland;
5. Westmead Hospital, NSW-2145 Sydney, Australia;
6. Clinica Medica III, Università di Firenze, I-50134 Firenze;
7. Meakins-Christie Laboratories, Montreal Chest Institute, McGill University Health Centre, Montreal, Quebec, Canada H2X 2P4; and
8. Department of Respiratory Medicine, Institute of Tuberculosis and Lung Diseases, 01-138 Warsaw, Poland