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4. Nasopharyngeal oxygen insufflation following pre-oxygenation using the four deep breath technique. Taha SK, Siddik-Sayyid SM, El-Khatib MF, Dagher CM, Hakki MA, Baraka AS. Anaesthesia; 2006 May; 61(5):427-30. PubMed ID: 16674614 [Abstract] [Full Text] [Related]