Dr. Isobe received honoraria from Medtronic Japan Co., Ltd. (Tokyo, Japan), Abbott Medical Japan LLC (Tokyo, Japan), Boston Scientific Japan K.K. (Tokyo, Japan), BIOTRONIK Japan, Inc. (Tokyo, Japan), Japan Lifeline Co., Ltd. (Tokyo, Japan), TERUMO CORPORATION (Tokyo, Japan), NIPRO CORPORATION (Osaka, Japan), DVx Inc. (Tokyo, Japan), Active Medical Co., Ltd. (Hokkaido, Japan), TORAY INDUSTRIES, INC. (Tokyo, Japan), KANEKA MEDIX CORPORATION (Osaka, Japan), Johnson & Johnson K. K. Medical Company (Tokyo, Japan), Nippon Boehringer Ingelheim Co., Ltd (Tokyo, Japan). Dr. Saji has received consulting fees from Abbott Medical Japan LLC (Tokyo, Japan) and Medtronic Japan Co., Ltd. (Tokyo, Japan). Dr. Takamisawa and Dr. Tobaru are on-site proctors of Medtronic, Inc. (Minneapolis, MN, USA) and Edwards Life Sciences Corporation (Irvine, CA, USA). Dr. Doi is an on-site proctor of Medtronic, Inc. (Minneapolis, MN, USA). Dr. Higuchi is a clinical proctor of Edwards Life Sciences Corporation (Irvine, CA, USA). Takashi Funaki, Mamoru Nanasato, Harutoshi Tamura, Kei Sato, Hiroaki Yokoyama, Shinya Okazaki, Takayuki Onishi, Shuichiro Takanashi, Takanori Ikeda, and Hiroaki Kitaoka declare no conflicts of interest.