[1] Ctr Postgrad Med Educ, Ecz Otwock, Poland
[2] London Hlth Sci Ctr, London, ON, Canada
[3] Actel Pharmaceut Ltd, Allschwil, Switzerland
[4] Natl Inst Cardiol Ignacio Chavez, Mexico City, DF, Mexico
[5] CARE Hosp, Hyderabad, Andhra Pradesh, India
[6] Hop Univ Bicetre, Serv Pneumol, Paris, France
[7] Univ Sao Paulo, Sch Med, Inst Heart, Sao Paulo, Brazil
[8] Univ Calif San Diego, San Diego, CA 92103 USA