European multicentre pilot survey to assess vitamin D status in rheumatoid arthritis patients and early development of a new Patient Reported Outcome questionnaire (D-PRO)

Vojinovic, Jelena;TINCANI, Angela;Sulli, Alberto;Soldano, Stefano;ANDREOLI, Laura;DALL'ARA, FRANCESCA;Ionescu, Ruxandra;Pasalic, Katarina Simic;Balcune, Inete;Ferraz Amaro, Ivan;Tlustochowicz, Małgorzata;Butrimiene, Irena;Punceviciene, Egle;Toroptsova, Natalia;Grazio, Simeon;Morovic Vergles, Jadranka;Masaryk, Pavol;Otsa, Kati;Bernardes, Miguel;Boyadzhieva, Vladimira;Salaffi, Fausto;Cutolo, Maurizio

2017-01-01