This article is freely available to all

Abstract

Article Abstract

Because this piece has no abstract, we have provided for your benefit the first 3 sentences of the full text.

Sir: My colleagues and I thank Dr. Chung for his views; hemakes several important points about our article.1 I would liketo point out that some of his data, although interesting, reflectdosing in diseases not covered directly in our article. My colleaguesand I do appreciate the update of data that was unavailablewhen we wrote this article.2,3