Gravar-mail: Efficacy and Safety of Pharmacokinetically Enhanced Amoxicillin-Clavulanate at 2,000/125 Milligrams Twice Daily for 5 Days versus Amoxicillin-Clavulanate at 875/125 Milligrams Twice Daily for 7 Days in the Treatment of Acute Exacerbations of Chronic Bronchitis