Additional file 1: of A multicenter randomized, double-blind, placebo-controlled pilot study to assess the efficacy and safety of riociguat in systemic sclerosis-associated digital ulcers NagarajaVivek SpinoCathie BushErica TsouPei-Suen DomsicRobyn T. LafyatisRobert FrechTracy GordonJessica K. SteenVirginia D. KhannaDinesh 2019 Complete inclusion/exclusion criteria. (PDF 904 kb)