Grandmotherhood across the demographic transition

• Simon N. Chapman ,

  Roles Conceptualization, Data curation, Formal analysis, Methodology, Project administration, Validation, Visualization, Writing – original draft, Writing – review & editing

  * E-mail: sinich@utu.fi

  Affiliation Department of Biology, University of Turku, Turku, Finland

  http://orcid.org/0000-0003-2342-3383

  ⨯
• Jenni E. Pettay,

  Roles Conceptualization, Methodology, Writing – review & editing

  Affiliation Department of Biology, University of Turku, Turku, Finland

  ⨯
• Mirkka Lahdenperä,

  Roles Conceptualization, Funding acquisition, Methodology, Writing – review & editing

  Affiliation Department of Biology, University of Turku, Turku, Finland

  ⨯
• Virpi Lummaa

  Roles Conceptualization, Funding acquisition, Methodology, Supervision, Writing – review & editing

  Affiliation Department of Biology, University of Turku, Turku, Finland

  ⨯