Funding for this research was provided by:
SI-BONE, Inc. (N/A)
Received: 17 January 2019
Revised: 10 April 2019
Accepted: 9 May 2019
First Online: 15 May 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: Written informed consent for the use of the data for research purposes was obtained.