https://www.reuters.com/article/us-amazon-healthcare/amazon-berkshire-jpmorgan-partner-to-cut-u-s-healthcare-costs-idUSKBN1FJ1NF >Amazon.com Inc, Berkshire Hathaway and JPMorgan Chase & Co said on Tuesday they will form a company to cut health costs for hundreds of thousands of their U.S. employees, setting up a major challenge to an inefficient U.S. healthcare system.