A multicenter, randomized, double-blind, placebo-controlled trial of oral type I collagen treatment in patients with diffuse cutaneous systemic sclerosis: I. oral type I collagen does not improve skin in all patients, but may improve skin in late-phase disease

一项针对弥漫性皮肤型系统性硬化症患者的口服I型胶原蛋白治疗的多中心、随机、双盲、安慰剂对照试验：I. 口服I型胶原蛋白并非对所有患者的皮肤都有改善作用，但可能改善晚期患者的皮肤状况。