This study was a retrospective and case-controlled study that included 12073 pregnant women over 35 years-of-age and gave birth in Hangzhou, China between 2018 and 2022. We investigated the perinatal
Abstract Context: The association between maternal levels of thyroid stimulating hormone (TSH), free thyroxine (FT4) and thyroid peroxidase antibody (TPOAb) status and stillbirth has not
