Human induced pluripotent stem cell-derived closed-loop cardiac tissue for drug assessment oleh Junjun Li, Ying Hua, Yuting Liu, Xiang Qu, Jingbo Zhang, Masako Ishida, Noriko Yoshida, Akiko Tabata, Hayato Miyoshi, Mikio Shiba, Shuichiro Higo, Nagako Sougawa, Maki Takeda, Takuji Kawamura, Ryohei Matsuura, Daisuke Okuzaki, Toshihiko Toyofuku, Yoshiki Sawa, Li Liu, Shigeru Miyagawa