Table 1

Diagnoses of patients studied (n = 113)

Healthy volunteers16
Idiopathic pulmonary fibrosis24
Diffuse panbronchiolitis10
Sarcoidosis11
Bronchiolitis obliterans organizing pneumonia 7
Hypersensitivity pneumonitis 4
Collagen vascular disease 7
 Rheumatoid arthritis 4
 Progressive systemic sclerosis 2
 CREST syndrome 1
Wegener’s granulomatosis 2
Bacterial pneumonia 4
Non-bacterial pneumonia 7
Pneumocystis carinii  2
Mycobacterium tuberculosis  2
 Atypical mycobactelosis 1
 Parasite 1
 Mycoplasma 1
Bronchial asthma 4
Bronchiectasis 6
Acute respiratory distress syndrome 9
Others 2
 Histiocytosis 1
 Alveolar proteinosis 1