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			          Emphysema - American Lung Association
			           
 Emphysema is one of the diseases that comprise the term COPD (chronic obstructive pulmonary disease). Emphysema involves gradual damage of lung tissue, specifically thinning and destruction of the alveoli or air sacs. http://www.lung.org/lung-health-and-diseases/lung-disease-lookup/emphysema/
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			          Chronic Obstructive Pulmonary Disease - NHS Choices
			           
 Chronic obstructive pulmonary disease (COPD) is the name for a collection of lung diseases including chronic bronchitis, emphysema and chronic obstructive airways disease. http://www.nhs.uk/conditions/Chronic-obstructive-pulmonary-disease/pages/introduction.aspx
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			          Emphysema Symptoms and Information - Patient Education Center
			           
 Emphysema. Multimedia health information for patients, caregivers and providers supplied by Harvard Medical School. http://www.patienteducationcenter.org/articles/emphysema/
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			          Emphysema Guide: Causes, Symptoms and Treatment Options
			           
 Emphysema - an easy to understand guide covering causes, diagnosis, symptoms, treatment and prevention plus additional in depth medical information. http://www.drugs.com/health-guide/emphysema.html
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			          Emphysema: Background, Pathophysiology, Epidemiology - Emedicine
			           
 Emphysema and chronic bronchitis are airflow-limited states contained within the disease state known as chronic obstructive pulmonary disease (COPD). http://emedicine.medscape.com/article/298283-overview
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			          Emphysema: Causes, Symptoms and Treatments - Medical News Today
			           
 Learn about emphysema, a lung condition that forms part of chronic obstructive pulmonary disease. Find out how it is caused, diagnosed and treated. http://www.medicalnewstoday.com/articles/8934.php
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			          Emphysema: Definition and Patient Education - Healthline
			           
 Emphysema is a disease of the lungs. It occurs most often in smokers. It also occurs in people who regularly breathe in irritants. http://www.healthline.com/health/emphysema
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			          Emphysema: Get Facts on Common Symptoms - Medicine Net
			           
 Emphysema is a COPD that often occurs with chronic bronchitis. The most common cause of emphysema is long term cigarette smoking. Often, symptoms don't appear until the disease has progressed. http://www.medicinenet.com/emphysema_lung_condition/article.htm
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			          National Emphysema Foundation - Home
			           
 We created this new site for the benefit of our loyal readers, and to enable them to better cope with and understand the nature of emphysema and COPD. http://emphysemafoundation.org
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			          Emphysema: MedlinePlus
			           
 Emphysema is a type of COPD involving damage to the air sacs (alveoli) in the lungs. As a result, your body does not get the oxygen it needs. Emphysema makes it hard to catch your breath. You may also have a chronic cough and have trouble breathing during exercise. https://www.nlm.nih.gov/medlineplus/emphysema.html
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			          Emphysema Definition, Symptoms, Causes and Life Expectancy - Emedicine Health
			           
 Information about emphysema causes, treatment, symptoms, and risk factors like cigarette smoking, air pollution, asthma, gender, and age. The most common symptom of emphysema is shortness of breath. Treatment information is also included. http://www.emedicinehealth.com/emphysema/article_em.htm
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			          Emphysema Causes: Smoking, Alpha-1 Antitrypsin Deficiency, and More - WebMD
			           
 Emphysema is a disease of the lungs that can make breathing difficult. WebMD explains what happens and what causes it. http://www.webmd.com/lung/copd/what-is-emphysema
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			          Emphysema - Mayo Clinic
			           
 Emphysema - Comprehensive overview covers symptoms, causes, treatment and prevention of this serious lung disorder. http://www.mayoclinic.org/diseases-conditions/emphysema/basics/definition/con-20014218