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- [7] RELATION BETWEEN LUNG-CANCER, CHRONIC-BRONCHITIS, AND AIRWAYS OBSTRUCTION BRITISH MEDICAL JOURNAL, 1975, 3 (5985): : 678 - 680
- [8] RELATION BETWEEN PERMANENT ADMINISTRATION OF ATROVENT AND THE DOSE OF STEROIDS IN CHRONIC-BRONCHITIS SCANDINAVIAN JOURNAL OF RESPIRATORY DISEASES, 1979, : 205 - 205