Bronchial Diseases

• Erasmus MC, University Medical Center Rotterdam — Rotterdam, Netherlands

• Dept of Respiratory and Sleep Medicine, Royal Hospital for Sick Children — Edinburgh, Scotland, United Kingdom

Not specified

• Specialized Hospital for Active Treatment Pneumophthysiatric Disease "Kudoglu" — Plovdiv, Bulgaria
• Regional Dispensary for Pulmonary Diseases Rousse — Rousse, Bulgaria
• 5-th Multiprofile Hospital for Active Treatment — Sofia, Bulgaria
• MHAT "Alexandrovska" — Sofia, Bulgaria

• Institute for Lung Health — Leicester, Leicestershire, United Kingdom

• Wilhelmina Children's Hospital (UMCU) — Utrecht, Netherlands

• Kaiser Permanente Center for Health Research — Portland, Oregon, United States

• Kaiser Permanente Center for Health Research — Portland, Oregon, United States

• Mailman School of Public Health at Columbia University — New York, United States

Not specified