Harper, Robert A.
Pfeiffer, Ferris M.
Choma, Theodore J.
Article History
Received: 13 February 2019
Accepted: 25 July 2019
First Online: 5 August 2019
Ethics approval and consent to participate
: This study was conducted on four cadaver porcine spines (adult male Hanford miniature swine). Our institution does not require approval on human or animal cadaver specimen studies.
: Not applicable.
: The authors declare that they have no competing interests.