TY - GEN AU - ten Kate,L P AU - te Meerman,G J AU - Anders,G J TI - Risk of Down's syndrome among second- and third-degree relatives of a proband with trisomy 21 SN - 0148-7299 PY - 1985///0103 KW - Down Syndrome KW - genetics KW - Humans KW - Pedigree KW - Risk N1 - Publication Type: Letter UR - https://doi.org/10.1002/ajmg.1320190324 ER -