Received: 10 July 2020
Accepted: 24 August 2020
First Online: 22 September 2020
Ethics approval and consent to participate
: All the patients included in the SRDG have signed an informed consent to the use of their data on research purpose. The scientific and ethics committees of the FEETEG foundation approved this study.
: not applicable
: PhD Jorge J Cebolla is employee of Takeda Pharmaceutical outside the submitted work; all other authors have indicated they have no financial relationships, relevant to this article, to disclose.