?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Witteveen&rft.au=Witteveen%2C+E.&rft.aufirst=E.&rft.degree=Master&rft.title=The+association+between+physical+environmental+conditions+and+different+groups+of+congenital+anomalies+in+the+northern+Netherlands&rft.date=2020