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In the Original Article by Richard C. Gardner, MD, entitled "The Lumbar Intervertebral Disk," which appeared in the January issue of the Archives (100:101-104, 1970), the author neglected to give an important reference regarding the knee-chest position as shown in Fig 1.—Tarlov IM: The knee-chest position for lower spinal operations. J Bone Joint Surg49A:1193-1194, 1967.
ERRATUM. Arch Surg. 1970;100(5):622. doi:10.1001/archsurg.1970.01340230088023