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== Additional Resources ==
=== Reference ===
* [http://emedicine.medscape.com/article/807143-overview eMedicine Medical Library: Chronic Obstructive Pulmonary Disease and Emphysema in Emergency Medicine]* [http://emedicine.medscape.com/article/297664-overview eMedicine Medical Library: Chronic Obstructive Pulmonary Disease]* [http://emedicine.medscape.com/article/287555-overview eMedicine Medical Library: Nicotine Addiction]* [http://www.merckmanuals.com/professional/pulmonary_disorders/chronic_obstructive_pulmonary_disease_and_related_disorders/chronic_obstructive_pulmonary_disease.html Merck Manual: Chronic Obstructive Pulmonary Disease]
=== Journal Articles ===
