TY - JOUR T1 - How the gut expels parasites: new clues JF - Canadian Medical Association Journal JO - CMAJ SP - 27 LP - 27 DO - 10.1503/cmaj.050684 VL - 173 IS - 1 AU - David Secko Y1 - 2005/07/05 UR - http://www.cmaj.ca/content/173/1/27.abstract ER -