Effect of sildenafil on digital ulcers in systemic sclerosis: Analysis from a single centre pilot study

Claudia S. Brueckner, Mike O. Becker, Thomas Kroencke, Doerte Huscher, Hans Ulrich Scherer, Margitta Worm, Gerd Burmester, Gabriela Riemekasten^*

^*Corresponding author for this work