Czirják L, Bokk A, Csontos G, Lörincz G, Szegedi G. Clinical findings in 61 patients with progressive systemic sclerosis. Acta Derm Venereol [Internet]. 1989 Nov. 17 [cited 2025 Feb. 25];69(6):533-6. Available from: https://medicaljournalssweden.se/actadv/article/view/4739