Ruaro, B. et al. 2012. Coexistence of osteopoikilosis with seronegative spondyloarthritis and Raynaud’s phenomenon: first case report with evaluation of the nailfold capillary bed and literature review. Reumatismo. 64, 5 (Dec. 2012), 335–339. DOI:https://doi.org/10.4081/reumatismo.2012.335.