From the Departments of ∗Cardiothoracic Surgery

†Microbiology, Royal Papworth Hospital, Cambridge Biomedical Campus, Cambridge, United Kingdom.

The authors have no funding or conflicts of interest to disclose.

Correspondence to: Jason Ali, FRCS(CTh), Department of Cardiothoracic Surgery, Royal Papworth Hospital, Cambridge Biomedical Campus, Cambridge, CB2 0AY, United Kingdom. E-mail: [email protected].