1. Merck & Co., Inc, 2000 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
2. Merck & Co., Inc, 90 East Scott Avenue, Rahway, New Jersey 07065, United States
3. Merck & Co., Inc, 213 East Grand Avenue, South San Francisco, California 94080, United States
4. Merck & Co., Inc, 770 Sumneytown Pike, West Point, Pennsylvania 19486, United States