Pharmaceutical preparations for use in gastrointestinal diseases and disorders; pharmaceutical preparations for the treatment of fistulas, fistulas in Crohn's disease patients, complex perianal fistulas and complex perianal fistulas in Crohn's diseases patients; pharmaceutical and diagnostic preparations for medical purposes for the treatment of fistulas in Crohn's disease patients, complex perianal fistulas and complex perianal fistulas in Crohn's diseases patients; cellular functioning acti...