RT Journal Article SR Electronic T1 Skin to lumbar epidural space distance (SED) in the obstetric Greek population: 149. JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 48 OP 48 DO 10.1053/rapm-00115550-200309001-00085 VO 28 IS Suppl 1 A1 Moka, E YR 2003 UL http://rapm.bmj.com/content/28/Suppl_1/48.1.abstract AB