Correction

In the article “N-Methyl-d-Aspartic Acid Receptor Expression in the Dorsolateral Prefrontal Cortex of Elderly Patients With Schizophrenia” by Stella Dracheva, Ph.D., et al. (September 2001; 158:1400–1410), the following sentence should be added to the second paragraph of the footnote on page 1407: “Stella Dracheva, Ph.D., and Salvatore A.E. Marras, M.S., contributed equally to this study.”