FILE - This undated file photo provided by the U.S. Attorney's Office in New Hampshire shows David Kwiatkowski, a former lab technician at an Exeter, N.H., hospital. An organization that registers health care workers was granted permission in fall 2017 to question Kwiatkowski’s medical and mental health care providers as it tries to avoid being held financially liable for his actions. The former traveling technician, convicted in 2013 of infecting patients with hepatitis C, is serving 39 years in prison for stealing painkillers and replacing them with saline-filled syringes tainted with his blood. (AP Photo/U.S. Attorney's Office, File)
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