?:authorAffiliation
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[\'National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology; Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, P.R. China.\', \'Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, P.R. China.\', \'Beijing Engineering Research Center of Laboratory Medicine, Beijing Hospital, Beijing, P.R. China.\']
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