title: Is the inferior vena cava really superior?
authors: Mark H
authors: MH
authors: Drazner
mesh_terms: D005260:Female; D006333:Heart Failure / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D014463:Ultrasonography; D014682:Vena Cava, Inferior / Q000000981:diagnostic imaging*