RT Journal Article SR Electronic T1 542. Caudal Anaesthesia in Sedated, Spontaneously Breathing Preterm and Term Infants for Inguinal Hernia Repair JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP e227 OP e227 DO 10.1136/rapm-00115550-200809001-00441 VO 33 IS Suppl 1 A1 Vittinghoff, M. A1 Gutmann, A. YR 2008 UL http://rapm.bmj.com/content/33/Suppl_1/e227.2.abstract AB