Liu, Jianmin
Rojas, Rafael
Lam, Fred C.
Mirza, Farhan A.
Mahadevan, Anand
Kasper, Ekkehard M.
Article History
Received: 25 December 2019
Accepted: 27 February 2020
First Online: 12 March 2020
Ethics approval and consent to participate
: We obtained institutional ethics board approval for this retrospective review. As all patient identifiers have been removed from the study, we did not obtain consent to participate.
: We did not obtain consent for publication.
: The authors declare that they have no competing interests.