A retrospective analysis of serum 25（OH）D levels and related factors in a physical examination population in a Grade 3 Class A hospital in Beijing
GUO Jingjing, LI Haixia, MA Qian, HUANG Haiming, ZENG Ziyi, AN Chongwen, PANG Lu
Laboratory Medicine . 2025, (6): 545 -550 .  DOI: 10.3969/j.issn.1673-8640.2025.06.005

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