1. 1) Hallegua, D.S., Wallace, D.J. : Gas-trointestinal and hepatic manifestations. Wallace, D.J., Hahn, B.H., eds., Dubois’ Lupus erythematosus, 6th Ed., Lippincott Williams & Wilkins, Philadelphia, pp843-861, 2002.
2. Gastrointestinal complications of collagen vascular diseases