After the special aired, the Karolinska Institute requested Sweden's national scientific review board to review six of Macchiarini's publications about the procedures. The board published its findings in October 2017, and concluded that all six demonstrated scientific misconduct, in particular by failing to report the surgical complications and deaths that occurred after the interventions; and that one of the articles falsely claimed that the procedure had been approved by an ethics committee, when this had not happened. The board called for all six of the papers to be retracted. It also reported that all of the papers' co-authors had committed scientific misconduct as well.