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Postgraduate Medicine Volume 84, 1988 - Issue 4
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Original Articles

Problems+Solutions

J. Robert WillsonAlbuquerque
, MD
Page 22 | Published online: 17 May 2016

References

  • Andersen HF, Johnson TR Jr, Barclay ML, et al. Gestational age assessment. 1. Analysis of individual clinical observations. Am J Obstet Gynecol 1981: 139(2): 173–7
  • Sabbagha RE, ed. Diagnostic ultrasound applied to obstetrics and gynecology. New York: Harper & Row, 1980: 76

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