About the Authors

B.M.T Shamsul

Department of Environmental and Occupational Health, Universiti Putra Malaysia, Selangor, Malaysia

C.C. Sia

Department of Environmental and Occupational Health, Universiti Putra Malaysia, Selangor, Malaysia

Y.G Ng

Department of Environmental and Occupational Health, Universiti Putra Malaysia, Selangor, Malaysia

K. Karmegan

Department of Environmental and Occupational Health, Universiti Putra Malaysia, Selangor, Malaysia

Corresponding Author

Email: uvea_2000@yahoo.com