Enteral glutamine reverses Th1/Th2 shift in severe trauma patients. A randomised, double-blind controlled study. - Boelens,P.G.; Houdijk,A.P.; Fonk,J.C.; Blomberg-van der Flier,B.; Haarman,H.J.; van Leeuwen,P.A. (Eur Surg Res, 2002)