T.C. Sağlık Bakanlığı :http://www.saglik.gov.tr/
European Respiratory Society :http://www.ersnet.org/
European Academy of Allergy and Clinical Immunology :http://www.eaaci.org/
American Thoracic Society :http://www.thoracic.org/
American College of Chest Physicians :http://www.chestnet.org/accp/
