Prevalence and distribution of peripheral musculoskeletal manifestations in spondyloarthritis including psoriatic arthritis: results of the worldwide, cross-sectional ASAS-PerSpA study (2021)
https://pubmed.ncbi.nlm.nih.gov/33462157/

Identificación of clinical phenotypes of peripheral involvement in patients with spondyloarthritis, including psoriatic arthritis: a cluster analysis in the worldwide ASAS-PerSpA study (2021)
https://pubmed.ncbi.nlm.nih.gov/34750246/

Gender differences among patients with primary ankylosing spondylitis and spondylitis associated with psoriasis and inflammatory bowel disease in an iberoamerican spondyloarthritis cohort (2016)
https://pubmed.ncbi.nlm.nih.gov/28002334/

Secukinumab: a promising therapeutic option in spondyloarthritis (2016)
https://pubmed.ncbi.nlm.nih.gov/27437696/

Rheumatic manifestations in inflammatory bowel diseases: a link between GI and rheumatology (2016)
https://pubmed.ncbi.nlm.nih.gov/26573206/