@misc{indiciaee9cae91b048c, title = {Serum screening for Down's syndrome.}, author = {A J Dawson and G Jones and M S Matharu and T M Reynolds and M D Penney and R John and M Creasy and P Gregory}, year = {1993}, doi = {10.1111/j.1471-0528.1993.tb14326.x}, url = {https://pubmed.ncbi.nlm.nih.gov/8218019/}, note = {Source identifier: 8218019} }