McAllister, Brian P.
Williams, Emmanuelle
Clarke, Kofi
Article History
First Online: 2 June 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest. However, for full disclosure, Dr. Clarke is on the speakers bureau for AbbVie, Takeda, and Janssen. In addition, he has served on an Ad Board for Pfizer.
: This is a review article, no patients were involved and informed consent was not required. Permission was obtained for all images used and appropriate attribution/acknowledgement stated.