Application of Combined Ultrasound and Maternal Serum Biochemical Indexes in the Detection of Fetal Structural Abnormalities and Chromosomal Abnormalities. - Guowei Han; Tianliang Jin; Li Zhang; Chen Guo; Hua Gui; Risu Na; Xuesong Wang; Haihua Bai (J. Medical Imaging Health Informatics, 2021)