Association of physical activity levels with frailty index in elderly Chinese: evidence from the China health and retirement longitudinal study (CHARLS).
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期刊介绍:
BMC Geriatrics is an open access journal publishing original peer-reviewed research articles in all aspects of the health and healthcare of older people, including the effects of healthcare systems and policies. The journal also welcomes research focused on the aging process, including cellular, genetic, and physiological processes and cognitive modifications.