Clinical Evaluation of the IONA Test for Non-invasive Pre Natal Screening in Twin Pregnancies May 27, 2020checkorphan Learn more about: Patau syndrome Related Clinical Trial Comparison of Aneuploidy Risk Evaluations Clinical Evaluation of the IONA Test for Non-invasive Pre Natal Screening in Twin Pregnancies Clinical Performance of the MaterniT21 PLUS LDT in Multiple Gestation Pregnancies Recruitment InformationAdministrative Informations