Executives with Norton Healthcare and Anthem insurance will resume talks next week in hopes of resolving their bitter contract dispute.The two sides met for several hours Friday but had no comment other than to say the talks continue to be productive.They also met Wednesday for eight hours.Noton terminated its contract with Anthem on July first, resulting in higher rates for many Anthem policyholders who use Norton facilities.Norton says it left the Anthem network because of problems with claims processing and other issues.Anthem claims Norton wanted to hike its reimbusement rates to unreasonably high levels.