About the Authors

Guang Guo

guang_guo@unc.edu

Affiliations Department of Sociology, The University of North Carolina, Chapel Hill, North Carolina, United States of America, Carolina Center for Genome Sciences, The University of North Carolina, Chapel Hill, North Carolina, United States of America, Caroline Population Center, The University of North Carolina, Chapel Hill, North Carolina, United States of America

Tianji Cai

Affiliation Department of Sociology, The University of North Carolina, Chapel Hill, North Carolina, United States of America

Rui Guo

Affiliation School of Library and Information Sciences, North Carolina Central University, Durham, North Carolina, United States of America

Hongyu Wang

Affiliation Department of Sociology, University of Macau, Av. Padre Tomás Pereira, Taipa, Macau

Kathleen Mullan Harris

Affiliations Department of Sociology, The University of North Carolina, Chapel Hill, North Carolina, United States of America, Carolina Center for Genome Sciences, The University of North Carolina, Chapel Hill, North Carolina, United States of America, Caroline Population Center, The University of North Carolina, Chapel Hill, North Carolina, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: TC RG. Contributed reagents/materials/analysis tools: HW KMH. Wrote the paper: GG.