NOTE: This article is based on research that utilizes the sources cited here as well as the collective experience of the Lab Tests Online Editorial Review Board. This article is periodically reviewed by the Editorial Board and may be updated as a result of the review. Any new sources cited will be added to the list and distinguished from the original sources used.

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Merck. General [3 paragraphs]. The Merck Manual of Diagnosis and Therapy, Section 2. Endocrine And Metabolic Disorders, Chapter 6. Hypothalamic-Pituitary Relationships [On-line information]. Available FTP: http://www.merck.com/pubs/mmanual/section2/chapter6/6a.htm

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Grunebaum, A. (2001 April 23). A Tiny Gland's Big Role in Pregnancy [11 paragraphs]. WebMD Health Information [On-line information]. Available FTP: http://my.webmd.com/content/article/3607.442

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The Impotence Sourcebook (1998). Laboratory Investigations of Erectile Dysfunction [13 paragraphs]. WebMD Health Information [On-line information]. Available FTP: http://my.webmd.com/content/article/1680.50141

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Spengler, R. (2001 February 22, Updated). Prolactin [24 paragraphs]. WebMD Health Information [On-line information]. Available FTP: http://my.webmd.com/printing/article/4118.253

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