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Affiliations

• ¹ West China Second University Hospital and Sichuan University Chengdu, China and McMaster University, Hamilton, Ontario, Canada.
• ² Boston University, Boston, MA.
• ³ University of California, Los Angeles and VA Greater Los Angeles Health Care System, Los Angeles, CA.
• ⁴ University of Auckland, Auckland, New Zealand.
• ⁵ University of Nebraska Medical Center and VA Nebraska-Western Iowa Health Care System, Omaha, NE.
• ⁶ McMaster University, Hamilton, Ontario, Canada.