[1] Univ Sains Malaysia, Unit Biostat & Res Methodol, Sch Med Sci, Hlth Campus, Kubang Kerian 16150, Kelantan, Malaysia
[2] Univ Sains Malaysia, Ctr Neurosci Serv & Res P3Neuro, Hlth Campus, Kubang Kerian 16150, Kelantan, Malaysia
[3] Univ Sains Malaysia, Sch Med Sci, Dept Pathol, Hlth Campus, Kubang Kerian 16150, Kelantan, Malaysia
[4] Univ Sains Malaysia, Sch Med Sci, Dept Med Microbiol & Parasitol, Hlth Campus, Kubang Kerian 16150, Kelantan, Malaysia
[5] Univ Sains Malaysia, Sch Med Sci, Dept Community Med, Hlth Campus, Kubang Kerian 16150, Kelantan, Malaysia
[6] Univ Sains Malaysia, Sch Med Sci, Dept Neurosci, Hlth Campus, Kubang Kerian 16150, Kelantan, Malaysia
[7] Gleneagles Med Ctr, 1 Jalan Pangkor, Georgetown 10050, Penang, Malaysia
[8] Hosp Kuala Lumpur, Forens Med, Jalan Pahang 50586, Wilayah Perseku, Malaysia
[9] Hosp Kuala Lumpur, Dept Pathol, Jalan Pahang 50586, Wilayah Perseku, Malaysia
[10] Hosp Kuala Lumpur, Dept Neurol, Jalan Pahang 50586, Wilayah Perseku, Malaysia
[11] Hosp Kuala Lumpur, Dept Neurosurg, Jalan Pahang 50586, Wilayah Perseku, Malaysia
[12] Natl Inst Med Sci & Nutr Salvador Zubiran, Dept Pathol, Ave Vasco de Quiroga 15,Secc 16, Mexico City 14000, DF, Mexico