| bacterial isolates and cigarette smoking in patients with chronic bronchitis: results from an italian multicenter survey. | patients who were cigarette smokers suffering exacerbations of chronic bronchitis were examined in eight outpatient clinics in five regions of italy, three from the south (campania, 82 patients; sicily, 82 patients; and puglia, 29 patients) and two from north (lombardy, 33 patients; and liguria, 50 patients). haemophilus influenzae was the most frequently isolated bacterium in the patients' sputum (in 30% of the total group), followed by streptococcus pneumoniae (in 20%), staphylococcus aureus ( ... | 1990 | 2112984 |