1. OBSTRUCTIVE LUNG DISEASE
2.NEOPLASMS
3.PLEURAL DISEASES
4.SLEEP DISORDERS
5.DRUG INDUCED LUNG DISEASES
6.ALVEOLAR DISEASES
7.PULMONARY CIRCULATION DISORDERS
8.INFECTIOUS DISEASES
9.ANATOMY AND PHYSIOLOGY
10.OCCUPATIONAL AND ENVIRONMENTAL
11.INTERSTITIAL AND INFLAMMATORY
12.CHEST WALL, SPINE, DIAPHRAGM
13.DISEASES OF AIRWAYS