ABO Blood Group Genotype and Plasma von Willebrand Factor in Normal Individuals

Masayuki Shima, Yoshihiro Fujimura, Takayuki Nishiyama, Tomomi Tsujiuchi, Nobuhiro Narita, Taei Matsui, Koiti Titani, Masahiko Katayama, Fumi‐ichiro ‐i Yamamoto, Akira Yoshioka