Fetoscopy and anterior placentas.
D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis; D005332:Fetoscopy / Q000379:methods*; D006453:Hemoglobinopathies / Q000175:diagnosis; D006801:Humans; D010922:Placenta Diseases / Q000150:complications*; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000379:methods*