O004: Vena caval filter in pregnant women with acute venous thromboembolism: is it useful and safe?. Issue 175 (March 2019) - Salazar, V.; Castillo, A.; Rivas, A.; Valle, R.; Nieto, J.A.; Font, C.; Schellong, S.; Braester, A.; Fidalgo, A.; Monreal, M.