The authors reply.
Department of Emergency Medicine, Denver Health Medical Center, Denver, CO, and Department of Emergency Medicine, University of Colorado School of Medicine, Aurora, CO.
Jody A
JA
Vogel
John
J
Kendall
D002405:Catheterization, Central Venous / Q000379:methods*; D006801:Humans; D007601:Jugular Veins / Q000000981:diagnostic imaging*; D013350:Subclavian Vein / Q000000981:diagnostic imaging*; D014463:Ultrasonography