Daniel, Fady Abnormal appearance of the internal anal sphincter at ultrasound: a specific feature of progressive systemic sclerosis? [electronic resource] - Gastroenterologie clinique et biologique May 2005 - 597-9 p. digital Publication Type: Case Reports; Journal Article ISSN: 0399-8320 Standard No.: 10.1016/s0399-8320(05)82135-9 doi Subjects--Topical Terms: Anal Canal--abnormalitiesDisease ProgressionFemaleHumansManometryMiddle AgedRectal Prolapse--etiologyScleroderma, Systemic--complications