Funding for this research was provided by:
Lupus Research Alliance (2017)
Received: 20 May 2019
Accepted: 8 November 2019
First Online: 29 November 2019
Ethics approval and consent to participate
: Not applicable, because our review used original illustrations.
: The authors declare that no competing interests exist. The contributing author is a member of the Editorial Board (Section Editor) of BMC Biotechnology.