title: Ultrasonographic guidance for central venous access.
authors.forename: J S
authors.initials: JS
authors.lastname: Greenspoon
mesh_terms: D002405:Catheterization, Central Venous / Q000379:methods*; D005260:Female; D006801:Humans; D007601:Jugular Veins; D011247:Pregnancy; D014465:Ultrasonics