(April 9, 2018, 2:39 PM EDT) -- ATLANTA — A medical insurance provider and its subsidiaries filed suit on March 28 in Georgia federal court against a hospital and its related entities, seeking restitution under the Employee Retirement Income Security Act for the hospital’s alleged fraudulent billing of laboratory services that were never performed by the hospital (Blue Cross and Blue Shield of Georgia Inc., et al. v. DL Investment Holdings LLC, et al., No. 18-1304, N.D. Ga.)....