Additional file 1: of Clinical application of a contingent screening strategy for trisomies with cell-free DNA: a pilot study María Sánchez-Durán Andrea Bernabeu García Inés Calero Jordi Ramis Fossas Tamara Illescas María Avilés Nerea Maiz Elena Carreras 10.6084/m9.figshare.9210677.v1 https://springernature.figshare.com/articles/journal_contribution/Additional_file_1_of_Clinical_application_of_a_contingent_screening_strategy_for_trisomies_with_cell-free_DNA_a_pilot_study/9210677 Anonymous survey concerning available prenatal testing options. (DOCX 12 kb) 2019-08-02 07:06:59 Cell-free DNA Contingent screening Fetal trisomy Prenatal screening