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Previous Volume 340:643-644 February 25, 1999 Number 8 Next

	Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

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Is there a "natural" interval between pregnancies in humans? Our nearest animal relatives, the chimpanzees and gorillas, breast-feed their offspring for long periods, and the median time from the birth of one offspring to the conception of the next is approximately 3.5 to 5 years.¹ The median birth-to-conception interval among women in less developed countries who breast-feed their infants is approximately three years,¹ but the interval might be shorter in women from better-nourished populations, even if their practices of breast-feeding and sexual intercourse are similar to those of women in the less developed areas. Some groups of people have cultural . . . [Full Text of this Article]

References

This article has been cited by other articles:

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• Conde-Agudelo, A., Rosas-Bermudez, A., Kafury-Goeta, A. C. (2006). Birth spacing and risk of adverse perinatal outcomes: a meta-analysis.. JAMA 295: 1809-1823 [Abstract] [Full Text]  
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• Conde-Agudelo, A., Belizan, J. M., Norton, M. H., Rosas-Bermudez, A. (2005). Effect of the Interpregnancy Interval on Perinatal Outcomes in Latin America. Obstet Gynecol 106: 359-366 [Abstract] [Full Text]  
• Melki, I S, Beydoun, H A, Khogali, M, Tamim, H, Yunis, K A (2004). Household crowding index: a correlate of socioeconomic status and inter-pregnancy spacing in an urban setting. J. Epidemiol. Community Health 58: 476-480 [Abstract] [Full Text]  
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