TY - JOUR AU - Van Oostayen, J A; Wasser, M N; Griffioen, G TI - Activity of Crohn's disease assessed by measurement of superior mesenteric artery flow with Doppler ultrasound JO - Neth J Med VL - 53 PY - 1998 DO - 10.1016/S0300-2977(98)00116-8 L3 - PubMed-ID: 9883007 SP - S3 EP - S8 N1 - et al. ER -