ACKNOWLEDGMENTS
We thank the patients who participated in this study and their families and site staff. We also thank the contributors of this study (Nobuhiko Seki, Noriyuki Ebi, Kohei Yoshimine, Masafumi Yamaguchi, Takashi Yokoi, Kazutoshi Komiya, Kazuo Kasahara, Akira Nakao, and Shinsuke Shiotsu) and the Clinical Research Support Center Kyushu (Akiko Ouraji, Yoshiaki Nishiyama) for managing the present study.