The head of Tokyo Women's Medical University Hospital and its leading heart specialist will resign over a malpractice case in which a 12-year-old girl died after undergoing heart surgery last year, it was announced Friday.

Naoaki Hayashi, head of the prestigious hospital, and Hiroshi Kasanuki, head of the hospital's heart institute, will resign Sept. 1 to take responsibility for the malpractice and subsequent falsification of Akika Hirayanagi's medical records, the hospital said.

It made the announcement at a news conference attended by Hiromitsu Yoshioka, chairman of the university, and other hospital officials.