FRONTIER &lt;FRTR.O> BUYS MALPRACTICE BUSINESS
  Frontier Insurance Group Inc
  said it acquired the malpractice book of business generated by
  Medical Quadrangle Inc and Medical Professional Liability
  Agency Ltd, a producer of medical malpractice coverage.
      It said the acquisition will enable all of Frontier's
  medical malpractice coverage to be serviced internally.
  

