Funding for this research was provided by:
The Swedish Research Council (K2011-X-20742-04-6)
Stockholms Läns Landsting (20110152)
Stiftelsen för Strategisk Forskning (IKE-2014-00354)
Received: 14 January 2020
Revised: 24 February 2020
Accepted: 2 March 2020
First Online: 20 March 2020
Ethics approval and consent to participate
: Ethical permissions (DNR 2010/1650 and DNR 2014/51432) were received from the Stockholm regional ethical review committee. Patients provided written informed consent before the procedure. The MSC expansion procedure was accredited by the Swedish National Board of Health and Welfare (952/2009, 6.3.3-8874/2011, 6.1.3-9791/2013, 6.1.3-16411/201).
: The patients gave consent for publication of the data (made unidentifiable).
: The authors declare that they have no competing interests.