Univ.-Klinik für Kinder- und Jugendheilkunde Wien, Wien, Austria
Gottfried Preyersches Kinderspital d. Stadt Wien, Wien, Austria
UZ Gent, Gent, Belgium
Penticton Regional Hospital, Penticton, British Columbia, Canada
220 Royal Avenue, New Westminster, British Columbia, Canada
825 Coxwell Avenue, Toronto, Ontario, Canada
Univ.-Klinik für Neurologie, Innsbruck, Austria
Boehringer Ingelheim Investigational Site, Örebro, Sweden
Confraternität Privatklinik, Wien, Austria
Mercer University School of Medicine, Macon, Georgia, United States
John's Hopkins University, Baltimore, Maryland, United States
Rush-Presbytarian-St Luke's Medical Center, Chicago, Illinois, United States
Hunter Holmes McGuire Medical Center, Richmond, Virginia, United States
Hines Veterans Administration Hospital, Hines, Illinois, United States
Spartanburg Medical Research, Spartanburg, South Carolina, United States
Harold B. Betton, M.D., Little Rock, Arkansas, United States
GFI Pharmaceuticals, Evansville, Indiana, United States
Boehringer Ingelheim Investigational Site, Zwickau, Germany
MEDARS GmbH, Berlin, Germany
Johannes-Gutenberg-Universität Mainz, Mainz, Germany
St. Thomas Health Services, Nashville, Tennessee, United States
Presbyterian Hospital of Dallas, Dallas, Texas, United States
Department of Respiratory Medicine, Toronto, Ontario, Canada
Herron Medical Center, Ltd., Chicago, Illinois, United States
Midwest Institute for Clinical Research Inc., Indianapolis, Indiana, United States
nTouch Research, Houston, Texas, United States
Harbor-UCLA Research and Education Institute, Torrance, California, United States
St. Francis Hospital and Medical Center, Hartford, Connecticut, United States
Temple University Hospital, Philadelphia, Pennsylvania, United States