Text and Data Mining valid from 2019-11-07
Received: 14 May 2019
Accepted: 24 October 2019
First Online: 7 November 2019
Ethics approval and consent to participate
: The study was approved by the Fukuoka Rehabilitation Hospital / Fukuoka Reha Orthopedic Clinic Institutional Review Board (FRH 2014-3-12, R-020). The patients received oral and written information about the study, and written informed consent was obtained from each patient before inclusion.
: Not applicable.
: The authors declare that they have no competing interests.