[Control of the position of the central venous catheter--problems in choice of methods].
Roewer
N
N
Engelhardt
W
W
D002405:Catheterization, Central Venous / Q000295:instrumentation*; D002408:Catheters, Indwelling; D004562:Electrocardiography; D006801:Humans; D012680:Sensitivity and Specificity