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Recommendations for Standardized Procedures for the Online and Offline Measurement of Exhaled Lower Respiratory Nitric Oxide and Nasal Nitric Oxide in Adults and Children-1999: This Official Statement of the American Thoracic Society was adopted by the ATS Board of Directors, July 1999. [Miscellaneous] American Journal of Respiratory & Critical Care Medicine. 160(6):2104-2117, December 1, 1999.
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