Affiliation: | 1. Merck Research Laboratories, 2000 Galloping Hill Road, Kenilworth, NJ 07033, USA;2. Merck Research Laboratories, PO Box 2000, 126 E. Lincoln, Rahway, NJ 07065, USA;3. Merck Research Laboratories, 33 Louis Pasteur Avenue, BMB-3, Boston, MA 02115, USA |