Open Access

ARTICLE

Two approaches for calculating female fetal DNA fraction in noninvasive prenatal testing based on size analysis of maternal DNA fragments

JIANBO LU^1,2,#,*, XIAOHAN SUN^3,#, XU MA^1,2,*

1 Human Genetics Resource Center, National Research Institute for Family Planning, Beijing, 100081, China
2 Graduate School, Peking Union Medical College, Beijing, 100730, China
3 Beijing University of Technology, Beijing, 100124, China
# These authors contributed equally to this work

* Corresponding Authors:JIANBO LU. Email: ; XU MA. Email: