RT Journal Article SR Electronic T1 Continuous Spinal Anesthesia in Colon Surgery JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 257 OP 262 VO 20 IS 1 A1 Wasmuth, C. E. A1 Turnbull, R. B. YR 1953 UL http://www.ccjm.org/content/20/1/257.abstract AB