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ABSTRACT Introduction: Chronic obstructive pulmonary disease and obstructive sleep apnea syndrome are two diseases often coexist in one person. The sleep apnea is often caused by an interruption of breathing during sleep due to obstruction of the upper airway during inhalation,... Read More

ABSTRACT Introduction: Health is a public good and in the free market is not achieved equitable or efficient allocation of resources. According to the economic approach of health, illness prevents the infected individual from participating in processes (work), but causes costs to... Read More