Adrenal Cortex Hormones--therapeutic use Adrenocorticotropic Hormone--therapeutic use Anti-Bacterial Agents--therapeutic use Antidiarrheals--therapeutic use Azathioprine--therapeutic use BCG Vaccine--therapeutic use Clinical Trials as Topic Colitis, Ulcerative--drug therapy Crohn Disease--drug therapy Cromolyn Sodium--therapeutic use Female Humans Immunity Immunosuppressive Agents--therapeutic use Levamisole--therapeutic use Metronidazole--therapeutic use Pregnancy Pregnancy Complications--drug therapy Sulfasalazine--therapeutic use Transfer Factor--therapeutic use