Many arms, one robot: the business end of the da Vinci system is seen in this media handout image from the manufacturer. Mark Clifford/Courtesy of Intuitive Surgical, Inc. hide caption

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It's unlikely that July patients are paying for residents' inexperience with their lives. iStockphoto.com hide caption

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If you bought this 1954 Buick when it was new, the price was just about as mysterious as it is today for hip replacement surgery. Hugo90/Flickr hide caption

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Redskins quarterback Robert Griffin III lays on the field after injuring his knee during an NFL playoff loss to the Seattle Seahawks on January 6. Griffin had knee surgery two days later. Richard Lipski/AP hide caption

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Maribel Ramos, 13, has both sickle cell disease and an abnormality of blood vessels called moyamoya. Both put her at risk of stroke, and, together, they add up to a 95 percent chance of a major stroke. Richard Knox/NPR hide caption

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Researchers find that more than 40 percent of surgical complications happen after patients leave the hospital. iStockphoto.com hide caption

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A cross-sectional X-ray shows what's called a "sunken chest." The bright circle near the bottom is the spine; the gray blob on the right is the heart. Living LLC/Getty Images hide caption

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Most living kidney donors return to their daily lives in a matter of weeks, but for some, unforeseen physical and financial complications arise. iStockphoto.com hide caption

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