1. Department of Analytical Research and Development, Merck & Co., Inc., 126 East Lincoln Avenue, Rahway, New Jersey 07065, United States
2. Department of Computational and Structural Chemistry, Merck & Co., Inc., Rahway, 126 East Lincoln Avenue, Rahway, New Jersey 07065, United States
3. Department of Computational and Structural Chemistry, Merck & Co., Inc., 2000 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
4. Nanoimaging Services, San Diego, California 92121, United States