UpToDate: “Overview of pulmonary function testing in adults.”
National Institutes of Health: “Usefulness of harmonica playing to improve outcomes in patients with chronic obstructive pulmonary disease.”
Catawba Valley Health System: “Top 5 COPD Myths Debunked in Favor of Better Breathing.”
COPD Foundation: “Breathing through Music: COPD360o Harmonicas for Health™.”
Cleveland Clinic: “Pursed Lip Breathing.”
CDC: “Leading Causes of Death.”
Merck Manual: “Shortness of Breath.”
Harvard Health Publishing: “Chronic obstructive pulmonary disease: It takes your breath away.”
Stephanie Williams, respiratory therapist and senior director of community education programs, COPD Foundation.
Mary Hart, director of research, Allergy & Asthma Network.
Mark Millard, MD, medical director, Baylor Martha Foster Lung Care Center; Wanda and Collins Burton Endowed Chair in Pulmonology, Baylor University Medical Center, Dallas.
Doug Martin, 68, Nashville, TN.