RT Journal Article SR Electronic T1 Occult gastro-intestinal cause of spastic paresis of the legs JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1064 OP 1064 DO 10.1136/gut.2007.127647 VO 57 IS 8 A1 V Verma A1 A Dhar A1 P F Chinnery YR 2008 UL http://gut.bmj.com/content/57/8/1064.abstract AB