Smood B, Spratt JR, Mehaffey JH, Luc JGY, Vinck EE, Lehtinen ML, Wallen TJ, Jenkinson CG, Kim W, Kesieme EB, Han JJ, Helmers MR, Iyengar A, Patrick WL, Kelly JJ, Watkins AA, Cevasco M, Williams ML. COVID-19 and cardiothoracic surgery: Effects on training and workforce utilization in a global pandemic. J Card Surg. 2021 Sep; 36(9):3296-3305.