Prevalence of preterm small for gestational age infants in Guangdong from 2014 to 2019 
Lyu Xuzai, Jiang Wenxiu, Miao Huazhang, Jiang Wei, He Hui, Luo Xianqiong
International Medicine and Health Guidance News . 2022, (19): 2719 -2722 .  DOI: 10.3760/cma.j.issn.1007-1245.2022.19.012

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