RT Journal Article SR Electronic T1 Learning Regional Anesthesia Techniques:: How Many is Enough? JF Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 37 OP 37 DO 10.1136/rapm-00115550-199419021-00037 VO 19 IS Suppl 2 A1 Kopacz, Dan J. A1 Neal, Joseph M. YR 1994 UL http://rapm.bmj.com/content/19/Suppl_2/37.abstract AB