• 2 Journals, Magazines, Newspapers

• 2 Engineering
• 2 Institute of Medicine (U.S.)
• 2 National Academy of Engineering
• 2 National Academy of Sciences (U.S.)
• 2 National Research Council (U.S.)
• 2 Science

• 2 Institute of Medicine (U.S.)
• 2 National Academy of Sciences (U.S.)
• 2 National Research Council (U.S.)

• 2 United States

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