Where a separation agreement applied only to prospective employers seeking a reference, it did not cover a credentialing form sent by a hospital physician who was seeking privileges.The 7th U.S. Circuit Court of Appeals affirmed a decision by Chief U.S. District Judge James D. Peterson, Western District of Wisconsin.Elisa Gallo began working as a dermatologist at the Mayo Clinic in Rochester, Minn., in February 2010. In September 2010, she started having performance issues and conflicts with her supervisor, Dr. Michael …