Coates, L. C., Soriano, E. R., Corp, N., Bertheussen, H., Callis Duffin, K., Campanholo, C. B., …Recommendations domain subcommittees, G. T. (2022). Group for Research and Assessment of Psoriasis and Psoriatic Arthritis (GRAPPA): updated treatment recommendations for psoriatic arthritis 2021. Nature Reviews Rheumatology, 18, 465 - 479. https://doi.org/10.1038/s41584-022-00798-0