RIBOSOMAL RNA MATERNAL AGE AND DOWN SYNDROME - SALAMANCA, FLAVIO (INST MEXICANO SEGURO SOCIAL,DIV INVEST GENET HUMANA,MEXICO CITY 73,MEXICO, 1978)
REV INVEST CLIN
Keywords: RIBOSOMAL, MATERNAL, AGE, DOWN, SYNDROME; CIENCIAS MEDICAS; CIENCIAS CLINICAS; PATOLOGIA CLINICA