Rezension:
What are the hours of work? purchase valetra The unit, where sales rose 4 percent last year, is considered a steady cash generator whose revenues can be used to bolster Merck\'s spending on research for human prescription drugs. Animal health revenue can also help stabilize Merck when its human prescription drug sales falter - as they did last year, when drug sales slipped 2 percent due to patent expirations.
