72 studying substantially the same Drug, biologic, device, Diagnostic, product, equipment, procedure, treatment, service, or supply; or • medical records; or • the opinions of consulting Providers and other experts in the field. The Plan has the sole authority and discretion to identify and weigh all information and decide all questions pertaining to whether a Drug, biologic, device, Diagnostic, product, equipment, procedure, treatment, service, or supply is Experimental or Invest igational.