Bone mineral density and calcium regulating hormones in patients with inflammatory bowel disease (Crohn's disease and ulcerative colitis). - Scharla,S.H.; Minne,H.W.; Lempert,U.G.; Leidig,G.; Hauber,M.; Raedsch,R.; Ziegeler,R. (Exp Clin Endocrinol, 1994)