RT Journal Article SR Electronic T1 Ultrasound guided blocks of thoracic nerve 11 & 12 in children undergoing appendix operation - preliminary results: 286. JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 13 OP 13 DO 10.1016/rapm-00115550-200609002-00024 VO 31 IS Suppl 2 A1 U. Oberndorfer A1 A. Bosenberg A1 S. Kettner A1 S. Kapral A1 M. Weintraud A1 P. Marhofer YR 2006 UL http://rapm.bmj.com/content/31/Suppl_2/13.abstract AB