Received: 1 November 2019
Accepted: 12 February 2020
First Online: 17 February 2020
Ethics approval and consent to participate
: Bone marrow was harvested from the surgical waste of femurs undergoing total hip arthroplasty, after informed written consent was given and as approved by the institutional review board of the University of Wuerzburg.
: Not applicable.
: The authors declare that they have no competing interests.