UpToDate: “Overview of pulmonary operate testing in adults.”

Nationwide Institutes of Well being: “Usefulness of harmonica taking part in to enhance outcomes in sufferers with power obstructive pulmonary illness.”

Catawba Valley Well being System: “High 5 COPD Myths Debunked in Favor of Higher Respiratory.”

COPD Basis: “Respiratory via Music: COPD360o Harmonicas for Well being™.”

Cleveland Clinic: “Pursed Lip Respiratory.”

CDC: “Main Causes of Demise.”

Merck Guide: “Shortness of Breath.”

Harvard Well being Publishing: “Continual obstructive pulmonary illness: It takes your breath away.”

Stephanie Williams, respiratory therapist and senior director of group education schemes, COPD Basis.

Mary Hart, director of analysis, Allergy & Bronchial asthma Community.

Mark Millard, MD, medical director, Baylor Martha Foster Lung Care Heart; Wanda and Collins Burton Endowed Chair in Pulmonology, Baylor College Medical Heart, Dallas.

Doug Martin, 68, Nashville, TN.