In the article "A Randomized, Placebo-Controlled Trial of Sertraline for Prophylactic Treatment of Highly Recurrent Major Depressive Disorder" by Jean-Pierre Lépine, M.D., et al. (May 2004; 161:836–842), the following acknowledgment should have been included: "The authors thank Alain Puech, M.D., for his advice and participation in the study design."