1. Mass
Spectrometry and Laser Spectroscopy Group, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6131, United States
2. ORISE
HERE Intern, University of Tennessee, Knoxville, Tennessee 37996, United States
3. Department
of Pharmacokinetics, Pharmacodynamics, and Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States