About the Authors

Prashant Kumar Singh

prashant_iips@yahoo.co.in

Affiliation International Institute for Population Sciences, Mumbai, India

Competing Interests

The author has declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PKS. Performed the experiments: PKS. Analyzed the data: PKS. Contributed reagents/materials/analysis tools: PKS. Wrote the paper: PKS.