Fetoscopy.
D000592:Amino Acid Metabolism, Inborn Errors / Q000175:diagnosis; D000649:Amniocentesis; D000013:Congenital Abnormalities / Q000175:diagnosis*; D005260:Female; D005332:Fetoscopy / Q000009:adverse effects; D030342:Genetic Diseases, Inborn / Q000175:diagnosis*; D006453:Hemoglobinopathies / Q000175:diagnosis; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000009:adverse effects; D012306:Risk; D014463:Ultrasonography