Letters to the Editor
YKL-40 is a serum biomarker reflecting the severity of cutaneous lesions in psoriatic arthritis
- Conflict of interest: none.
Correspondence: Kiyofumi Yamanishi, M.D., Ph.D., Department of Dermatology, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo 663-8501, Japan. Email: firstname.lastname@example.org
No abstract is available for this article.