Addendum

In the article by Olivieri and Brittenham, entitled "Iron-Chelating Therapy and the Treatment of Thalassemia," which appeared in the February 1, 1997 issue (Vol 89, No 3), the following addendum should be noted:

The authors gratefully acknowledge James Griffin and Franklin Bunn and their editorial colleagues for helpful suggestions in the completion of this review. We also thank our colleagues for their contributions and suggestions: Antonio Cao, Renzo Galanello, Sergio Piomelli, and Elliott Vichinsky; and Michael Baker and Alvin Zipursky for ongoing encouragement. Finally, heartfelt thanks are extended to David Nathan and David Weatherall for their extensive contributions over the years to the body of work presented in this review, as well as for invaluable advice and long-term support.