More on Aetna (AET) Q4: net profit -49% to $190.1M, partly because of $120M in litigation expenses and other one-time items. Medical benefit ratio rises to 84.1% from 80.7%, membership +64K to 18.2M. Affirms guidance for FY EPS of at least $5.40. Names Shawn Guertin as CFO to replace Joseph Zubretsky, who will head a new unit called National Businesses. Guertin was CFO at Coventry Healthcare, which Aetna is buying.