Gruber, B L A double-blind randomized controlled trial of ketotifen versus placebo in early diffuse scleroderma. [electronic resource] - Arthritis and rheumatism Mar 1991 - 362-6 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial ISSN: 0004-3591 Standard No.: 10.1002/art.1780340315 doi Subjects--Topical Terms: AdultDouble-Blind MethodDrug EvaluationFemaleHumansIntradermal TestsKetotifen--therapeutic useMaleMast Cells--drug effectsMiddle AgedProspective StudiesScleroderma, Systemic--drug therapySkin--drug effects