About the Authors

Zhiyong Huang

Contributed equally to this work with: Zhiyong Huang, Fabrice Kämpfen

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration

Affiliation Southwestern University of Finance and Economics, Chengdu, China

Fabrice Kämpfen

Contributed equally to this work with: Zhiyong Huang, Fabrice Kämpfen

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration

kampfenf@sas.upenn.edu

Affiliation Population Studies Center, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

Competing Interests

The authors have declared that no competing interests exist.