Chromosomal Abnormalities Detected by Chromosomal Microarray Analysis and Karyotype in Fetuses with Ultrasound ...
Introduction China is one of the countries with the highest incidence of birth defects in the world. The incidence of birth defects in China is about 5.6%, and the number of new birth defects is about 900,000 each year, accounting for 20% of the world’s …