Investigation of the prevalence of congenital heart disease among preschool children of different ethnicities in the Baotou region
YUAN Zhiqiang, BAI Wenqiang, XU Yaohui
Journal of Baotou Medical College . 2026, (3): 11 -15 .  DOI: 10.16833/j.cnki.jbmc.2026.03.003

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