Echo rounds: Reorientation of an obstructive, hypermobile papillary muscle: intraoperative echocardiographic assessment.
Coyne JT, Alfirevic A. Echo rounds: Reorientation of an obstructive, hypermobile papillary muscle: intraoperative echocardiographic assessment. Anesth Analg. 2013 May; 116(5):989-992.