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Ultrasonography Versus Landmark for Peripheral Intravenous Cannulation: A Randomized Controlled TrialMcCarthy, Melissa L.; Shokoohi, Hamid; Boniface, Keith S.; Eggelton, Russell; Lowey, Andrew; Lim, Kelvin; Shesser, Robert; Li, Ximin; Zeger, Scott L. · Annals of Emergency Medicine · 2015