A Amadeo, G Bertulezzi, L Civelli, C Porta, and M Moroni. 1998. “Plasma and Urinary Endothelin-1 Titers and Plasma Von Willebrand Activity in Pseudoxanthoma Elasticum”. Haematologica 83 (10). Pavia, Italy, 952-53. https://doi.org/10.3324/%x.