. . "hemophilia B" . . . "Haemophilia B" . . . "286.1" . . . . "240" . . . "emerg" . "Haemophilia_B#History" . "Haemophilia B#History" . "haemophilia B" . . "B" . . "haemophilia" . "hemophilia b" . "Christmas disease" . "306900" . "hemophilia B Leyden" . "Haemophilia B Leyden" . "D002836" . "Hemophilia B" . . "000539" . "Haemophilia B" . . "5561" . "D67." .