1.
Vial Y, Tran C, Addor M-C, Hohlfeld P. Screening for fetal malformations: performance of routine ultrasonography in the population of the Swiss Canton of Vaud. Swiss Med Wkly [Internet]. 2001 Aug. 25 [cited 2024 Apr. 24];131(3334):490-4. Available from: https://smw.ch/index.php/smw/article/view/98