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Causal mediating effect of social network in relationship between smartphone usage and loneliness in older adults
LI Ming-zhe, TIAN Yi-chuan, WANG Cheng-long, WANG Jing-jing
Journal of Nursing . 2024, (20): 45 -49 .  DOI: 10.16460/j.issn1008-9969.2024.20.045