Veterinary oncologists are veterinarians who study cancer in animals, including prevention, development, diagnosis, and treatment!
C. Analgesics Too much of these will cause liver disease
Beta-adrenergic blockers will reduce the heart's demand for oxygen
True, sleep problems indeed are a quite often occurence among children as well as adults - they do occur quite often but don't necessarily occur all the time for people to whom it does happen. At the same time, when someone suffers from sleep problems, this doesn't necessarily mean that he cannot sleep at all.