Examination of pirfenidone (Esbriet®) therapy in coal workers' pneumoconiosis (black lung) with pulmonary fibrosis (scarring of the lung).

Examination of Pirfenidone (Esbriet®) Therapy in Coal Workers' Pneumoconiosis With Pulmonary Fibrosis

Examination of Pirfenidone (Esbriet®) Therapy in Coal Workers' Pneumoconiosis With Pulmonary Fibrosis Associated With Radiographic and Functional Impairment to Examine the Reduction in Progression of Disease, Reduction of Exacerbation Rates and Possible Reduction of Inflammatory Biomarkers as an Index of Clinical Response.