Risk factors for<unk><unk>  vary according to the type; acute<unk>  is related to the recent initiation of tobacco smoking. One third to one-half of the chronic<unk>  patients have a history of asthma.
Eosinophilic pneumonia risk factors
Hypersensitivity pneumonitis risk factors
Bronchitis risk factors
Bronchiectasis risk factors
Bronchiolitis risk factors
Eosinophilic pneumonia causes
Pneumoconiosis risk factors
Alpha 1-antitrypsin deficiency risk factors