?:authorAffiliation
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[\'Evidence-based Nursing Center, School of Nursing, Lanzhou University Lanzhou 730000, China.\', \'Evidence-based Medicine Center, School of Basic Medical Sciences, Lanzhou University Lanzhou 730000, China.\', \'Evidence-based Medicine Center, Tianjin University of Traditional Chinese Medicine Tianjin 300193, China.\', \'Evidence-based Nursing Center, School of Nursing, Lanzhou University Lanzhou 730000, China Evidence-based Medicine Center, School of Basic Medical Sciences, Lanzhou University Lanzhou 730000, China.\']
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