Investigation on prenatal screen for maternal serum during the 1st trimester in 45 laboratories in China
HE Falin, TAO Jiong, WANG Wei, ZHONG Kun, YUAN Shuai, WANG Zhiguo
Laboratory Medicine . 2016, (6): 533 -537 .  DOI: 10.3969/j.issn.1673-8640.2016.06.019