Answers are grounded in this paper and cite their sources.
H. BAKER, D.N. GOLDING, M. THOMPSON; THE NAILS IN PSORIATIC ARTHRITIS., British Journal of Dermatology, Volume 76, Issue 12, 1 December 1964, Pages 549–554
No takes yet. Share an insight, caveat, or question.
Baker et al. (1964) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: