The prothrombin gene 3’-untranslated region mutation is frequently associated with factor V Leiden in thrombophilic patients and shows ethnic-specific variation in allele frequency - Howard, TE; Marusa, M; Boisza, J; Young, A; Sequeira, J; Channell, C; Guy, C; Benson, E; Duncan, A (Blood, 1998)
(letter).