title: Invited commentary.
authors.affiliation: Division of Cardiothoracic Surgery, University of North Carolina, 3031 Burnett Womack Bldg, CB 7065, Chapel Hill, NC 27599-7065, USA. rfeins@med.unc.edu
authors.forename: Richard H
authors.initials: RH
authors.lastname: Feins
mesh_terms: D006348:Cardiac Surgical Procedures / Q000193:education*; D002321:Career Choice; D003198:Computer Simulation; D004504:Education, Medical, Undergraduate / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008611:Mentors / Q000706:statistics & numerical data*