Investigating the comparative effect of vitamin D level with the type of complications in Henoch Schönlein purpura and Kawasaki disease Mehrnoush Hassas Yeganeh, Reza Sinaei, Mitra Rouhi, Reza Shiari, Vadood Javadi Parvaneh, Khosro Rahmani, Erfan Sheikhbahaei

Nephrogenic systemic fibrosis in a patient with a p-ANCA systemic vasculitis Eduardo Cuende, Mikel Aldamiz, Joseba Portu, Ramón Ruiz de Gauna, Rosa Zaballa, Juan Carlos Vesga

Late-onset Cogan's syndrome associated with large-vessel vasculitis Iván Cabezas-Rodríguez, Anahy Brandy-García, Carlos Rodríguez-Balsera, Paloma Rozas-Reyes, Belen Fernández-Llana, Luis Arboleya-Rodríguez