Routine First-Trimester Ultrasound Screening Using a Standardized Anatomical Protocol
American Journal of Obstetrics and Gynecology（2020）
关键词
abnormality,fetus,first trimester,standardized anatomic protocol,ultrasound
AI 理解论文
溯源树
样例
生成溯源树，研究论文发展脉络
Chat Paper
正在生成论文摘要