text_1: Allogeneic mechanical circulatory support is not as effective as autologous mechanical circulatory support for treating acute myocardial infarction.
text_2: DESIGN, SETTING, AND PATIENTS A phase 1/2 randomized comparison (POSEIDON study) in a US tertiary-care referral hospital of allogeneic and autologous MSCs in 30 patients with LV dysfunction due to ICM between April 2, 2010, and September 14, 2011, with 13-month follow-up.