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APA Citation
Stefan, M. S., Nathanson, B. H., Higgins, T. L., Steingrub, J. S., Lagu, T., Rothberg, M. B., & Lindenauer, P. K. (2015). comparative Effectiveness of Noninvasive and Invasive Ventilation in Critically Ill Patients With Acute Exacerbation of Chronic Obstructive Pulmonary Disease*. Critical care medicine, 43(7), . http://access.bl.uk/ark:/81055/vdc_100052552186.0x00001e