About the Authors

Gustaf Rejnö

gustaf.rejno@ki.se

Affiliations Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden, Obstetrics and Gynaecology Unit, Södersjukhuset, Stockholm, Sweden

Cecilia Lundholm

Affiliation Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden

Tong Gong

Affiliation Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden

Kjell Larsson

Affiliation Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden

Sissel Saltvedt

Affiliations Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden, Obstetrics and Gynaecology Unit, Karolinska University Hospital, Stockholm, Sweden

Catarina Almqvist

Affiliations Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden, Astrid Lindgren Children's Hospital, Lung and Allergy Unit, Karolinska University Hospital, Stockholm, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: GR CL CA. Performed the experiments: GR. Analyzed the data: GR. Contributed to the writing of the manuscript: GR CL KL TG SS CA. Assisted in the statistical analyses: CL.