In the above-mentioned article, several scientists were erroneously omitted from the acknowledgments section. The authors wish to acknowledge Hsuan-shen Chen, Huaibing He, Tina Santos, Ling Xu, Xiaofang Li, Xinchun Tong, and Bernard Choi, of the Discovery Bioanalytics Group, Department of Pharmacokinetics, Pharmacodynamics and Drug Metabolism, Merck Research Laboratories, Rahway, NJ, for the quantitative analysis of MK-2640, insulin, and epinephrine.

The authors apologize for this omission. The online version of the article ( has been updated to correct this omission.

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