About the Authors

Tomasz F. Wrycza

wrycza@demogr.mpg.de

Affiliation Max Planck Institute for Demographic Research, Rostock, Germany

Trifon I. Missov

Affiliations Max Planck Institute for Demographic Research, Rostock, Germany, Institute of Sociology and Demography, University of Rostock, Germany

Annette Baudisch

Affiliations Max Planck Institute for Demographic Research, Rostock, Germany, Max-Planck Odense Center on the Biodemography of Aging, University of Southern Denmark, Odense, Denmark

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: TFW. Wrote the paper: TFW TIM AB. Initiated research: AB. Performed mathematical analysis: TFW TIM.