1. Statement by committee on diagnostic standards for nontuberculous respiratory disease;American Thoracic Society,1962
2. Definition and classification of chronic bronchitis for clinical and epidemiological purposes;Medical Research Council Committee on Aetiology of Chronic Bronchitis;Lancet,1965
3. Host defense impairment that may lead to respiratory infections;Reynolds;Clin Chest Med,1987
4. Terapia pneumologica;Grassi,1987
5. Haemophilus influenzae pneumonia in adults: report of five cases caused by ampicillin-resistant strains;Stratton;Am Rev Respir Dis,1980