About the Authors

Yunfei Gao

Contributed equally to this work with: Yunfei Gao, Chao Sheng, Ri-hua Xie

Affiliations Department of Obstetrics and Gynecology, Nanfang Hospital of Southern Medical University, Guangzhou, Guangdong, China, OMNI Research Group, Department of Obstetrics and Gynecology, University of Ottawa Faculty of Medicine, Ottawa, Canada, Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Canada

Chao Sheng

Contributed equally to this work with: Yunfei Gao, Chao Sheng, Ri-hua Xie

Affiliation Department of Obstetrics and Gynecology, Nanfang Hospital of Southern Medical University, Guangzhou, Guangdong, China

Ri-hua Xie

Contributed equally to this work with: Yunfei Gao, Chao Sheng, Ri-hua Xie

Affiliations OMNI Research Group, Department of Obstetrics and Gynecology, University of Ottawa Faculty of Medicine, Ottawa, Canada, Hunan University of Medicine Department of Nursing, Huaihua, Hunan, China, McLaughlin Center for Population Risk Assessment, University of Ottawa Faculty of Medicine, Ottawa, Canada

Wen Sun

Affiliation Department of Obstetrics and Gynecology, Third Affiliated Hospital, Guangzhou Medical University, Guangzhou, China

Elizabeth Asztalos

Affiliations Centre for Mother, Infant and Child Research, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada, Departments of Pediatrics and Obstetrics and Gynecology Faculty of Medicine, University of Toronto, Toronto, Canada

Diane Moddemann

Affiliation Department of Pediatrics and Child Health and Neonatal Follow-up Program, University of Manitoba, Winnipeg, Canada

Lonnie Zwaigenbaum

Affiliations Departments of Pediatrics and of Psychiatry, University of Alberta, Edmonton, Canada, Autism Research Centre, Glenrose Rehabilitation Hospital, Edmonton, Canada

Mark Walker

Affiliations OMNI Research Group, Department of Obstetrics and Gynecology, University of Ottawa Faculty of Medicine, Ottawa, Canada, Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Canada, School of Epidemiology, Public Health, and Preventive Medicine, University of Ottawa, Ottawa, Canada

Shi Wu Wen

swwen@ohri.ca

Affiliations OMNI Research Group, Department of Obstetrics and Gynecology, University of Ottawa Faculty of Medicine, Ottawa, Canada, Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Canada, School of Epidemiology, Public Health, and Preventive Medicine, University of Ottawa, Ottawa, Canada

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: SWW YFG. Data curation: YFG CS RHX WS. Formal analysis: YFG CS RHX WS. Funding acquisition: SWW. Investigation: YFG CS RHX WS EA DM LZ MW SWW. Methodology: SWW YFG CS RHX WS. Project administration: SWW. Resources: SWW. Supervision: SWW. Validation: YFG CS RHX WS. Visualization: YFG CS RHX WS EA DM LZ MW SWW. Writing – original draft: YFG CS. Writing – review & editing: SWW WS EA DM LZ MW.