Erratum to: Can J Anesth/J Can Anesth (2013) 60:1163–1164 DOI 10.1007/s12630-013-0022-8

In the article entitled: “Guidewire advancement is interrupted by an internal jugular vein valve with a restricted opening: an ultrasound image” published in the November 2013 issue, Can J Anesth 2013; DOI: 10.1007/s12630-013-0022-8, references #1, #4 and #5 should read:

  1. 1.

    Macchi C, Catini C. The valves of the internal jugular veins: a statistical investigation in 120 living subjects using ultrasonic tomography. Ital J Anat Embryol 1994; 99: 123-7.

  2. 4.

    Sander D, Winbeck K, Etgen T, Knapp R, Klingelhofer J, Conrad B. Disturbance of venous flow patterns in patients with transient global amnesia. Lancet 2000; 356: 1982-4.

  3. 5.

    Boes CJ, Matharu MS, Goadsby PJ. Benign cough headache. Cephalalgia 2002; 22: 772-9.

The publisher apologizes most sincerely for this error.