About the Authors

Yoke Mun Chan

yokemun@medic.upm.edu.my

Affiliations Institute of Gerontology, University Putra Malaysia, Serdang, Malaysia, Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, University Putra Malaysia, Serdang, Malaysia

Mohd Shariff Zalilah

Affiliation Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, University Putra Malaysia, Serdang, Malaysia

Sing Ziunn Hii

Affiliation Viva Life Science Private Limited, Petaling Jaya, Malaysia

Competing Interests

One of the authors, SZH is YMC's spouse who has contributed significantly to the study, as clarified in the Author's Contributions of the Cover Letter. The company (Viva Life Science Private Limited) however had no role in the funding, study design, data collection and analysis, decision to publish, or preparation of the manuscript. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: YMC MSZ SZH. Performed the experiments: YMC SZH. Analyzed the data: YMC. Contributed reagents/materials/analysis tools: YMC MSZ SZH. Wrote the paper: YMC. Critically reviewed the paper for important intellectual content and provided technical support: MSZ SZH.