title: Reply.
authors.affiliation: Artificial Organ and Transplantation Surgery Division Department of Surgery Graduate School of Medicine, University of Tokyo, Tokyo, Japan.
authors.forename: Kyoji
authors.initials: K
authors.lastname: Ito
authors.affiliation: Artificial Organ and Transplantation Surgery Division Department of Surgery Graduate School of Medicine, University of Tokyo, Tokyo, Japan.
authors.forename: Nobuhisa
authors.initials: N
authors.lastname: Akamatsu
authors.affiliation: Artificial Organ and Transplantation Surgery Division Department of Surgery Graduate School of Medicine, University of Tokyo, Tokyo, Japan.
authors.forename: Norihiro
authors.initials: N
authors.lastname: Kokudo