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66. [Importance of ultrasonography at the early stage of pregnancy]. Shimada N Josanpu Zasshi; 1981 Feb; 35(2):158. PubMed ID: 6909323 [No Abstract] [Full Text] [Related]
69. Importance of surgical consultation after ultrasonic diagnosis. Brereton RJ Br Med J (Clin Res Ed); 1984 Dec; 289(6458):1618-9. PubMed ID: 6439343 [No Abstract] [Full Text] [Related]
70. Prenatal screening for birth defects: an update. Morris K Mo Med; 2004; 101(2):121-4. PubMed ID: 15119110 [TBL] [Abstract][Full Text] [Related]
71. [Ultrasonographic early diagnosis of placenta praevia and its clinical value]. Zanke S Geburtshilfe Frauenheilkd; 1985 Oct; 45(10):710-3. PubMed ID: 3905491 [TBL] [Abstract][Full Text] [Related]