AUTHOR=Liu Yanbin , Yan Jun TITLE=Association between serum pyridoxal 5′-phosphate levels and chronic obstructive pulmonary disease: findings based on NHANES 2005–2010 JOURNAL=Frontiers in Nutrition VOLUME=11 YEAR=2025 URL=https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2024.1526575 DOI=10.3389/fnut.2024.1526575 ISSN=2296-861X