Hal S.Feldman, SofyaDvoskin, Arthur G.Richard, Ann MarieDoucette
Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control Jul 1996, 21 (4) 318-326; DOI: 10.1136/rapm-00115550-199621040-00009
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Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control Nov 1993, 18 (Suppl 6) 453-460; DOI: 10.1136/rapm-00115550-199318061-00013