title: Current status of research and development of artificial hearts in Japan.
mesh_terms: D000818:Animals; D001243:Assisted Circulation / Q000295:instrumentation; D002417:Cattle; D011211:Electric Power Supplies; D005260:Female; D006041:Goats; D006354:Heart, Artificial; D006801:Humans; D007564:Japan; D008875:Middle Aged; D011474:Prosthesis Design; D013997:Time Factors