About the Authors

Warren C. Sanderson

Contributed equally to this work with: Warren C. Sanderson, Sergei Scherbov, Patrick Gerland

warren.sanderson@stonybrook.edu

Affiliations Department of Economics, Stony Brook University, Stony Brook, NY, United States of America, International Institute for Applied Systems Analysis, World Population Program, Wittgenstein Centre for Demography and Global Human Capital (IIASA, VID/ÖAW, WU), Schlossplatz 1, Laxenburg, Austria

Sergei Scherbov

Contributed equally to this work with: Warren C. Sanderson, Sergei Scherbov, Patrick Gerland

Affiliations International Institute for Applied Systems Analysis, World Population Program, Wittgenstein Centre for Demography and Global Human Capital (IIASA, VID/ÖAW, WU), Schlossplatz 1, Laxenburg, Austria, Austrian Academy of Science, Vienna Institute of Demography, Vienna, Austria, Russian Presidential Academy of National Economy and Public Administration (RANEPA), Moscow, Russian Federation

Patrick Gerland

Contributed equally to this work with: Warren C. Sanderson, Sergei Scherbov, Patrick Gerland

Affiliation United Nations Organization, Department of Economic and Social Affairs (DESA), Population Division, Two UN Plaza, Room DC2-1934, New York, NY, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: SS WCS. Data curation: SS PG. Formal analysis: SS PG WCS. Funding acquisition: SS WCS. Methodology: SS PG WCS. Writing – original draft: WCS. Writing – review & editing: SS PG WCS.