Reference	Objective	Design	Evidence
Black et al. [484]	Prophylatic antibiotics for chronic bronchitis	MA	1A+
Smucny et al. [485]	Antibiotics for acute bronchitis	MA	1A−
Sethi et al. [487]	Proof‐of‐concept study evaluates whether intermittent pulsed moxifloxacin treatment (5 days/8 weeks) could reduce the frequency of these exacerbations	RCT	2A−