Prenatal diagnosis: the demand is increasing.
D002170:Canada; D005260:Female; D005817:Genetic Counseling; D030342:Genetic Diseases, Inborn / Q000175:diagnosis; D006801:Humans; D008423:Maternal Age; D011247:Pregnancy; D018566:Pregnancy, High-Risk; D011296:Prenatal Diagnosis / Q000191:economics / Q000639:trends*; D040841:Resource Allocation