This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1002/pd.4960 This article is protected by copyright. All rights reserved. Women's choices for invasive or non-invasive testing: Influence of gestational age and service delivery Running title: An empirical study on women’s choice in prenatal testing Words: 3487 No. of tables: 4 No. of figures: 0 No. of Appendices: 2 An Chen 1 , Henni Tenhunen 1 , Paulus Torkki 1 , Seppo Heinonen 2 , Paul Lillrank 1 ,Vedran Stefanovic 2 1. Aalto University, Institute of Healthcare Engineering, Management and Architecture (HEMA), Finland 2. Fetomaternal Medical Center, Department of Obstetrics and Gynecology, Helsinki University Hospital and University of Helsinki, Finland Corresponding author: An Chen Address: HEMA Institute, Maarintie 8, P.O. Box 15500, 00076, Finland Phone number: +358 50 441 6863 Email: an.chen@aalto.fi