Funding for this research was provided by:
Instituto de Salud Carlos III (PI13/01782)
Fundación Genzyme (2015)
Received: 24 December 2018
Accepted: 20 September 2019
First Online: 14 November 2019
Ethics approval and consent to participate
: The study was approved by the corresponding local ethics committee, and all participants provided informed consent.
: Not applicable.
: The authors declare that they have no competing interests.