Negrón, José B. http://orcid.org/0000-0003-4659-5508
Article History
Received: 20 December 2018
Accepted: 2 February 2019
First Online: 18 February 2019
Compliance with ethical standards
:
: Dr. Negrón reports personal fees and Grants from the European League Against Rheumatism outside the submitted work.