Christopher K. Johnson
Columbia University
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
United States
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Columbia University
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California Pacific Medical Center
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University of Pennsylvania
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Harvard University
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Seton Medical Center
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Centers for Medicare and Medicaid Services
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Food and Drug Administration
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Mayo Clinic
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Ohio State University
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University of California, Los Angeles
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University of South Florida
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Valley Hospital
Canada
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Mount Sinai Hospital
