Fig. 1From: Comparison of extracorporeal membrane oxygenation outcome for influenza-associated acute respiratory failure in Japan between 2009 and 2016Diameters of the drainage and return cannulas. Box plot graph showing the diameters of a the drainage cannula and b return cannula used in 2009 and 2016. The diameters of both cannulas were significantly larger in 2016 compared with those in 2009Back to article page