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Perfekt aldersforskjell mellom søsken

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Referanser

  1. Schummers L, Hutcheon JA, Hernandez-Diaz S et al.. Association of Short Interpregnancy Interval With Pregnancy Outcomes According to Maternal Age. JAMA Internal Medicine 2018. jamanetwork.com
  2. NHS: Women 'should leave at least a year between pregnancies' www.nhs.uk
  3. Zhu BP, Rolfs RT, Nangle BE, Horan JM. Effect of the interval between pregnancies on perinatal outcomes.. N Engl J Med. 1999; 340(8): 589-94..
  4. Conde-Agudelo A, Rosas-Bermúdez A, Kafury-Goeta AC. Birth spacing and risk of adverse perinatal outcomes: a meta-analysis.. JAMA 2006; 295(15): 1809-23. PubMed
  5. Mayo Clinic: Sibling rivalry: Helping your children get along www.mayoclinic.org
  6. Statistisk Sentralbyrå: Slik er norske barnefamilier www.ssb.no
  7. Eurostat: Families with children in the EU ec.europa.eu
  8. SSB. Familier og husholdninger 2021 www.ssb.no
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