Mota, J., Castellano, A., Santiago, F., Carvalho, P., Madeira, A.S., Pereira De Moura, J.M. and Nascimento Costa, J.M. 2011. Digital ulcers in systemic sclerosis: use of endotheline antagonists. Acta Médica Portuguesa. 24, 5 (Dec. 2011), 837–42. DOI:https://doi.org/10.20344/amp.500.