General practitioners and prenatal testing--follow the experts or scrutinise the issue?
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D000649:Amniocentesis / Q000706:statistics & numerical data / Q000639:trends; D004992:Ethics, Medical; D019317:Evidence-Based Medicine; D005194:Family Practice / Q000379:methods* / Q000592:standards; D005260:Female; D006801:Humans; D008403:Mass Screening / Q000379:methods / Q000706:statistics & numerical data* / Q000639:trends; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D011296:Prenatal Diagnosis / Q000592:standards / Q000706:statistics & numerical data* / Q000639:trends; D016216:Ultrasonography, Prenatal / Q000706:statistics & numerical data / Q000639:trends