Use of thromboelastography before the administration of hemostatic agents to safely taper recombinant activated factor VII in acquired hemophilia A: a report of three cases oleh Hiroki Hosoi, Yuina Akagi, Toshiki Mushino, Masahiro Takeyama, Naoto Minoura, Takayuki Hiroi, Yoshiaki Furuya, Masaya Morimoto, Shogo Murata, Shinobu Tamura, Takashi Sonoki