RT Journal Article SR Electronic T1 Entamoeba histolytica liver abscess JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1758 OP 1758 DO 10.1503/cmaj.091926 VO 182 IS 16 A1 Dianne Fang A1 David Shu YR 2010 UL http://www.cmaj.ca/content/182/16/1758.abstract