SANCHEZ FAYOS, J Congenital defect of Christmas factor (P.T.C.) I. Haemophilia B in seven male patients. [electronic resource] - Bulletin of the Institute for Medical Research, University of Madrid - 171-81 p. digital Publication Type: Journal Article ISSN: 0020-3955 Subjects--Topical Terms: Factor IXHemophilia BHumansMale