Malandrini A, Selvi E, Villanova M, Berti G, Sabadini L, Salvadori C, et al. Autonomic nervous system and smooth muscle cell involvement in systemic sclerosis: ultrastructural study of 3 cases. J Rheumatol. 2000;27:1203-6 pubmed
..Our findings indicate early involvement of the autonomic nervous system and to a lesser extent of smooth muscle cells. We confirmed the presence of early vascular lesions and involvement of mast cells in the pathological process. ..