https://www.healthcentral.com/article/best-coughing-techniques-for-copd-patients
COPD

Best Coughing Techniques for COPD Patients

    John Bottrell

    John Bottrell

    John Bottrell is a registered Respiratory Therapist. He wrote for HealthCentral as a health professional for Asthma and Chronic Obstructive Pulmonary Disease (COPD).