(Vancouver, WA)  --  More than 900 patients are being urged to get tested for hepatitis C after possible exposure at PeaceHealth Southwest Medical Center in Vancouver.  Health officials say 936 patients may have been exposed to hepatitis C because of the actions of a former PeaceHealth Southwest Medical Center employee who's accused of diverting drugs for personal use.  Hospital CEO Sy Johnson says while the risk of infection is low, the testing is being encouraged as a precaution.  The hospital is footing the bill for the hepatitis C testing.