Identification of a New Mechanism of Antithrombin Deficiency Hardly Detected by Current Methods: Duplication of SERPINC1 Exon 6 - de la Morena-Barrio, Belén; de la Morena-Barrio, María Eugenia; Padilla, José; Teruel-Montoya, Raúl; Asenjo, Susana; Wypasek, Ewa; Undas, Anetta; Miñano, Antonia; Vicente, Vicente; Corral, Javier (Thrombosis and Haemostasis, 2018)