(November 15, 2018, 10:22 AM EST) -- DETROIT — Allstate Insurance Co. and two of its affiliates on Nov. 8 sued two chiropractors and a number of clinics in a Michigan federal court, claiming that they engaged in a scheme to submit fraudulent bills for benefits under Michigan’s No-Fault Act that were medically unnecessary or not performed (Allstate Insurance Co., et al. v. Derek L. Bittner D.C., et al., No. 18-13484, E.D. Mich.)....