**Conflict of interest**

The authors declare no conflict of interest.

## **Notes/thanks/other declarations**

A special thanks to Loredano Giorni: his humanity and expertise strengthened our moral values concerning the sustainability of health care systems so that more people can be cured and further resources can be deployed to get innovative drugs.

*Rheumatic Diseases and Biosimilars: Evidence about Switch from Originators to Biosimilars… DOI: http://dx.doi.org/10.5772/intechopen.100128*
