Funding for this research was provided by:
NRW Stem Cell Network (Call 2015)
Received: 7 August 2017
Revised: 29 November 2017
Accepted: 19 December 2017
First Online: 5 February 2018
Ethics approval and consent to participate
: This work was submitted to and approved by the Ethics Committee of the RWTH Aachen University (EK187/08 for umbilical cord and placenta collection; EK300/13 for bone marrow femoral heads) and by the Ethics Committee of the Medical Faculty of the Heinrich-Heine-University Düsseldorf (EK-Nr. 3634 for lipoaspirates).
: Not applicable.
: The authors declare that they have no competing interests.
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