About the Authors

Nawi Ng

nawi.ng@epiph.umu.se

Affiliation Division of Epidemiology and Global Health, Department of Public Health and Clinical Medicine, Umeå Centre for Global Health Research, Umeå University, Umeå, Sweden

Mohammad Hakimi

Affiliation Centre for Reproductive Health, Faculty of Medicine, Gadjah Mada University, Yogyakarta, Indonesia

Ailiana Santosa

Affiliation Division of Epidemiology and Global Health, Department of Public Health and Clinical Medicine, Umeå Centre for Global Health Research, Umeå University, Umeå, Sweden

Peter Byass

Affiliation Division of Epidemiology and Global Health, Department of Public Health and Clinical Medicine, Umeå Centre for Global Health Research, Umeå University, Umeå, Sweden

Siswanto Agus Wilopo

Affiliation Centre for Reproductive Health, Faculty of Medicine, Gadjah Mada University, Yogyakarta, Indonesia

Stig Wall

Affiliation Division of Epidemiology and Global Health, Department of Public Health and Clinical Medicine, Umeå Centre for Global Health Research, Umeå University, Umeå, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: NN MH AS SW. Performed the experiments: NN MH AS. Analyzed the data: NN MH AS SW PB. Contributed reagents/materials/analysis tools: PB SAW. Wrote the paper: NN MH AS SW. Obtained permission to link the surveillance data: MH SAW. Critical reviews and approval of final manuscript: NN MH AS PB SAW SW.