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Acta Obstetricia et Gynecologica Scandinavica Volume 53, 1974 - Issue 3
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Original Article

Detection of Fetal Heart Activity During Early Pregnancy by Combined B-Scan and Doppler Examination: A New Application

Olli Piiroinen Department of Obstetrics and Gynecology, University of Turku, Turku, Finland
Pages 231-233 | Received 04 Jun 1973, Published online: 09 Jul 2009

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Pentti Jouppila. (1980) Clinical and Ultrasonic Aspects in the Diagnosis and Follow-Up of Patients with Early Pregnancy Failure. Acta Obstetricia et Gynecologica Scandinavica 59:5, pages 405-409.
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Connie Jörgensen, Johannes Skjaerris, Bertil Sundén & Anders Åberg. (1980) Diagnostic Ultrasound in Threatened Abortion and Suspected Ectopic Pregnancy. Acta Obstetricia et Gynecologica Scandinavica 59:3, pages 233-235.
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Pentti Jouppila. (1976) Fetal Movements Diagnosed by Ultrasound in Early Pregnancy. Acta Obstetricia et Gynecologica Scandinavica 55:2, pages 131-135.
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Olli Piiroinen. (1975) Studies in Diagnostic Ultrasound. Acta Obstetricia et Gynecologica Scandinavica 54:sup46, pages 3-60.
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