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...lihat lebih banyakMaria 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.lihat lebih sedikit