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Oxford University Press, SLEEP, 11(34), p. 1479-1486, 2011

DOI: 10.5665/sleep.1380

Lippincott, Williams & Wilkins, Current Opinion in Pulmonary Medicine, 6(17), p. 419-424, 2011

DOI: 10.1097/mcp.0b013e32834b7e65

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