Received: 4 May 2020
Accepted: 30 July 2020
First Online: 6 October 2020
Ethics approval and consent to participate
: The study was approved by the local Internal Review Board (IRB-Clinica Las Condes, Santiago de Chile, Chile).
: All patients had signed a written consent.
: AGV, SM, GP, and NM declare no competing interests. RM: Regenerative Cell Therapy Center Bioscell, Santiago de Chile. CJ: Regenerative Cell Therapy Center Bioscell, Santiago de Chile. EN: Regenerative Cell Therapy Center Bioscell. The Bioscell company had no role in the design or conduct of the study, in the analysis and interpretation of data, or in the preparation of the manuscript.