As a whistleblower lawsuit against Florida Hospital continues its way through federal court here, the nonprofit hospital system repaid nearly $3 million it received from overbilling the government, said the whistleblowers' attorney, Marlan Wilbanks."This further proves the credibility of our case," said Wilbanks, who represents whistleblowers Amanda Dittman, a bill-coding and reimbursement-compliance officer, and Dr. Charlotte Elenberger, a radiologist. Both are former Florida Hospital workers. However, hospital spokeswoman Samantha O'Lenick said the repayment was based on findings from a third-party audit.