Letrozole belongs to a class of drugs known as nonsteroidal aromatase inhibitors. Letrozole decreases the amount of estrogen in the body. Because many types of breast cancer cells require estrogen to grow, this drug may slow or stop the growth of cancer cells. Letrozole is given as a tablet taken by mouth.
Earnings as a Veterinary Surgeon. The lowest-earning 10 percent of veterinarians earned below $46,610 in May 2008, and the highest-earning 10 percent earned above $143,660, according to the BLS.
Half of all vet technicians received between $25,010 and $36,660 per year. By comparison, veterinarians reported an average of $43.87 per hour and $91,250 per year during the same period, and half of them reported actual earnings of between $65,450 and $106,420 per year. The difference is even starker at the top end of the pay scale.