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5. Assessment and management of bleeding in the first trimester of pregnancy. Snell BJ. J Midwifery Womens Health; 2009; 54(6):483-91. PubMed ID: 19879521 [Abstract] [Full Text] [Related]
10. First-trimester chorionic gonadotropin measurements as an aid in the diagnosis of early pregnancy disorders. Braunstein GD, Karow WG, Gentry WC, Rasor J, Wade ME. Am J Obstet Gynecol; 1978 May 01; 131(1):25-32. PubMed ID: 645779 [No Abstract] [Full Text] [Related]
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