作者单位：Department of Surgical Outcomes and Analysis, Kaiser Permanente, 3033 Bunker Hill Street, San Diego[1]Weill Medical College of Cornell University, Cornell University, 402 East 67 Street, New York, NY[2]Office of Surveillance and Biometrics, Center for Devices and Radiological Health, Food and Drug[3]Department of Orthopedic Surgery, Southern California Permanente Medical Group, Kaiser Permanente[4]
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