Document Type : Original
Authors
1 Department of Otorhinolaryngology - Head and Neck Surgery, Faculty of Medicine, Universitas Sumatera Utara, Jl. Dr. Mansur No. 5, Medan, 20155, Indonesia.
2 Department of Internal Medicine, Faculty of Medicine, Universitas Sumatera Utara, Jl. Dr. Mansur No. 5, Medan 20155, Indonesia.
3 Department of Community Medicine, Faculty of Medicine, Universitas Sumatera, Utara, Jl. Dr. Mansur No. 5, Medan, 20155, Indonesia.
4 Malaysian Agricultural Research and Development Institute (MARDI), MARDI Headquarters, Persiaran MARDI-UPM, 43400 Serdang, Selangor, Malaysia.
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