1. Infectious Disease and Vaccines, Merck & Co. Inc., Rahway, NJ 07065, USA.
2. Computational and Structural Chemistry, Merck & Co. Inc., Rahway, NJ, 07065, USA.
3. Quantitative Biosciences, Merck & Co. Inc., Rahway, NJ 07065, USA.
4. Discovery Chemistry, Merck & Co. Inc., Rahway, NJ 07065, USA.
5. Evotec Ltd., Abingdon, Oxfordshire OX14 4RZ, UK.
6. Department of Pharmacokinetics, Pharmacodynamics, and Drug Metabolism, Merck & Co. Inc., Rahway, NJ 07065, USA.
7. Biostatistics and Research Decision Sciences, Merck & Co. Inc., Rahway, NJ 07065, USA.