About the Authors

Ayesha Ahmed

ayesha_ah@hotmail.com (AA); ccwy@ummc.edu.my (CWY)

Affiliation Department of Social and Preventive Medicine, Faculty of Medicine University of Malaya, Kuala Lumpur, Malaysia

Choo Wan-Yuen

ayesha_ah@hotmail.com (AA); ccwy@ummc.edu.my (CWY)

Affiliations Department of Social and Preventive Medicine, Faculty of Medicine University of Malaya, Kuala Lumpur, Malaysia, Julius Centre University of Malaya (Centre for Clinical Epidemiology and Evidence Based Medicine), University of Malaya, Kuala Lumpur, Malaysia

Mary Joseph Marret

Affiliation Department of Paediatrics, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia

Cheah Guat-Sim

Affiliation Paediatric Institute, General Hospital Kuala Lumpur, Kuala Lumpur, Malaysia

Sajaratulnisah Othman

Affiliation Department of Primary Care Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia

Karuthan Chinna

Affiliations Department of Social and Preventive Medicine, Faculty of Medicine University of Malaya, Kuala Lumpur, Malaysia, Julius Centre University of Malaya (Centre for Clinical Epidemiology and Evidence Based Medicine), University of Malaya, Kuala Lumpur, Malaysia

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CWY MJM CGS SO. Performed the experiments: CWY CGS SO. Analyzed the data: AA KC. Contributed reagents/materials/analysis tools: AA CWY CGS SO KC. Wrote the paper: AA CWY MJM. Revising the draft for important intellectual content: AA CWY MJM. Approved the final version of the submitted manuscript: AA CWY MJM CGS SO KC.