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R H Gray1, O M Campbell, R Apelo

  • 1Department of Population Dynamics, Johns Hopkins School of Hygiene and Public Health, Baltimore, MD 21205.

Lancet (London, England)
|January 6, 1990
PubMed
概括

纯母乳养显著延迟了产后母亲的排卵和月经的恢复. 然而,如果月经在六个月前恢复或母乳养持续超过这一时期,从而需要避孕,风险就会增加.

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