About the Authors

MeiZhi Irene Li

Contributed equally to this work with: MeiZhi Irene Li, Pei Sze Jeslyn Wong

Pei Sze Jeslyn Wong

Contributed equally to this work with: MeiZhi Irene Li, Pei Sze Jeslyn Wong

Lee Ching Ng
Cheong Huat Tan

tan_cheong_huat@nea.gov.sg

Affiliation Environmental Health Institute, National Environment Agency, Singapore, Singapore

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CHT LCN. Performed the experiments: CHT PSJW MZIL. Analyzed the data: CHT PSJW MZIL. Contributed reagents/materials/analysis tools: CHT PSJW MZIL. Wrote the paper: CHT PSJW MZIL LCN.