Abstract. Since the introduction of the ultrasonic aspirator developed and adapted for neurosurgery by the Cooper Scientific Corporation over the past decade, the instrumentation has gained wide acceptance in the removal of certain central nervous system tumors.
The majority â 70 percent â of Americans explained the reason they did not regret opening a store credit card during the holiday shopping season was because they received a large discount on their original purchase. Although shoppers may feel bullied, they are also sympathetic for the position the store clerk is in.
Stress Continues to Be a Burden. 1  More than half of Americans reported personal health problems (53 percent) as a source of stress, roughly the same level (52 percent) as last year but up from 2009 (47 percent).