To the Editor:
We thank Dr. Abud-Mendoza and colleagues1 for their interest in our report2. The suggestion of additional biomarkers as an aid in the diagnostic process of neuropsychiatric systemic …
Address correspondence to Dr. E. Zirkzee, Leiden University Medical Center – Rheumatology, PO Box 9600, Leiden 2300 RC, The Netherlands. E-mail: e.j.m.zirkzee{at}lumc.nl