RT Journal Article SR Electronic T1 Audio Visual Aids During Lengthy Surgical Procedures Under Spinal Anaesthesia JF Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 104 OP 105 DO 10.1136/rapm-00115550-199318021-00104 VO 18 IS Suppl 2 A1 A. Avila A1 P. Nelligan A1 D. Taylor A1 R. Hendel A1 M. Shine YR 1993 UL http://rapm.bmj.com/content/18/Suppl_2/104.abstract AB