Reviewed by Michael Smith on November 01, 2016
National Heart, Lung, and Blood Institute: "What Are the Signs and Symptoms of Bronchitis?"; FamilyDoctor.org: "Acute bronchitis"; AudioJungle; krooogle; Sebastian Kaulitzki; AlexRaths; Dreamstime.com; Polka Dot Images; yocamon; Hemera Technologies
© 2016 WebMD, LLC. All rights reserved.