Baxter to buy Sweden's Gambro for about $4 billion Tue Dec 4, 2012 7:27am EST (Reuters) - Baxter International Inc said it agreed to buy privately held Swedish dialysis product company Gambro AB for about $4 billion to boost its renal therapies portfolio. The deal, which is expected to close in the first half of 2013, will be financed through a combination of cash generated from overseas operations and debt. Reporting by Esha Dey in Bangalore; Editing by Joyjeet Das