aDepartment of Obstetrics and Gynecology, Guangdong Provincial Key Laboratory of Major Obstetric Diseases; Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology; Guangdong-Hong Kong-Macao Greater Bay Area Higher Education Joint Laboratory of Maternal-Fetal Medicine; The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou

bInstitute of Reproductive and Child Health, National Health Commission Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing

cGuangzhou Panyu District Maternal and Child Health Hospital

dDongguan Maternal and Children Health Hospital

eDepartment of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, China

Correspondence to Lili Du, 63 Duobao Road, Guangzhou, 510150 Guangdong, China. E-mail: [email protected]

Abbreviations: ALT, alanine transaminase; AST, aspartate transaminase; CDs, caesarean deliveries; IQR, interquartile range; IVF, in-vitro fertilization; NICU, neonatal ICU; SCr, serum creatinine; TT, thrombin time; USPSTF, US Preventive Services Task Force; WBC, white blood cells

Received 6 September, 2023

Revised 16 November, 2023

Accepted 27 November, 2023

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