Wassef, Medhat R <br/><br/>
Spinal perianal block: a prospective, randomized, double-blind comparison with spinal saddle block.  [electronic resource] 

 -  Anesthesia and analgesia  Jun 2007 
 - 1594-6, table of contents p.  digital 
<br/><br/> Publication Type: Comparative Study; Journal Article; Randomized Controlled Trial 
<br/><br/><label>ISSN: </label>1526-7598 
<br/><br/><label>Standard No.: </label>10.1213/01.ane.0000261510.37489.00  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Aged<br/>Anal Canal--drug effects<br/>Anesthesia, Spinal--methods<br/>Bupivacaine--administration & dosage<br/>Double-Blind Method<br/>Female<br/>Humans<br/>Male<br/>Middle Aged<br/>Nerve Block--methods<br/>Posture--physiology<br/>Prospective Studies