Furukawa S, Wingenfeld L, Takaya A, Nakagawa T, Sakaguchi I, Nishi K, et al. Morphological variations of the internal jugular venous valve. Anat Physiol 2012;2:108.
Harmon JV Jr, Edwards WD. Venous valves in subclavian and internal jugular veins. Frequency, position, and structure in 100 autopsy cases. Am J Cardiovasc Pathol 1987;1:51-4.
Wu X, Studer W, Erb T, Skarvan K, Seeberger MD. Competence of the internal jugular vein valve is damaged by cannulation and catheterization of the internal jugular vein. Anesthesiology 2010;112:979.
Fukazawa K, Aguina L, Pretto EA Jr. Internal jugular valve and central catheter placement. Anesthesiology 2010;112:979.