Prevalence of undiagnosed autoimmune rheumatic diseases in the first trimester of pregnancy. Results of a two-steps strategy using a self-administered questionnaire and autoantibody testing. - Spinillo, A.; Beneventi, F.; Epis, O. M.; Montanari, L.; Mammoliti, D.; Ramoni, V.; Di Silverio, E.; Alpini, C.; Caporali, R.; Montecucco, C. (BJOG: An International Journal of Obstetrics & Gynaecology, 2008)