Funding for this research was provided by:
National Institute on Aging (R01AG054671, R01AG055444, P30AG19610)
NIH Office of the Director (DP5OD019833)
Fonds De La Recherche Scientifique - FNRS (SPD28094292)
Received: 6 November 2018
Accepted: 14 January 2019
First Online: 4 February 2019
Ethics approval and consent to participate
: Written informed consents were obtained from all the participants before undergoing any procedure. Approvals were obtained from the University of Antioquia Ethics Committee and the MGH Institutional Review Board before that participants underwent any procedures.
: Written informed consents were obtained from all the participants for publication of this manuscript. Copies of the written consents are available for review by the Editor-in-Chief of this journal.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.