Low-dose cyclosporine for the treatment of Crohn's disease. - Feagan,B.; McDonald,J.; Rochon,J.; Laupacis,A.; Fedorak,R.; Kinnear,D.; Saibil,F.; Groll,A.; Archambault,A.; Gillies,R.; Valberg,B.; Irvine,J. (N Engl J Med, 1994)