What the EF Is Going on Here?

Sorrell, VL; Kotter, J; Anaya, P

Sorrell, VL (corresponding author), Univ Kentucky, Gill Heart & Vasc Inst, 900 S Limestone,CTW 320, Lexington, KY 40536 USA.

JOURNAL OF THE AMERICAN SOCIETY OF ECHOCARDIOGRAPHY, 2020; 33 (7): 812