Maria Muirhead is a Certified Respiratory Educator and pharmacist. She developed a special interest in Chronic Obstructive Pulmonary Disease (COPD) after her father was diagnosed w...vizualizați mai multeMaria Muirhead is a Certified Respiratory Educator and pharmacist. She developed a special interest in Chronic Obstructive Pulmonary Disease (COPD) after her father was diagnosed with this progressive and debilitating lung disease.vizualizați mai puține