The authors were asked to respond to this letter

The authors respond to Egilman.

Dr. Egilman highlights the need for testing of chemicals prior to their use by workers and consumption by the public [Egilman, 2014]. We agree that the demonstrated toxicity of diacetyl illustrates the need for testing and great vigilance regarding diacetyl substitutes, other flavoring chemicals, and chemicals involved in flavor manufacture, and that such an approach would better ensure the saf...

Authors' response to letter to the editor.

We thank Drs. Mandal and Goel for their interest in our work, but we disagree with their interpretation of the literature compared with our findings. While Waldert and associates did indeed find a correlation between a longer delay to nephroureterectomy (NUx) and more advanced stage, they did not report metastasis-free survival. Moreover, they found no difference in cancer-specific survival. Th...

Letter to the editor

Letter to the editor

 This article has no abstract.

Letter to the Editor

No Abstract is available