[1] Natl Inst Neurosci & Hosp, Dhaka, Bangladesh
[2] Natl Inst Neurosci & Hosp, Dept Pediat Neurol, Dhaka, Bangladesh
[3] Natl Inst Neurosci & Hosp, Dept Clin Neurol, Dhaka, Bangladesh
[4] Natl Inst Neurosci & Hosp, Dept Paediat Neurol, Dhaka, Bangladesh
[5] Natl Inst Neurosci & Hosp, Dept Neurophysiol, Dhaka, Bangladesh
[6] Sir Salimullah Med Coll, Neurol, Dhaka, Bangladesh
[7] Chattogram Maa O Shishu Hosp, Med Coll, Autism & Child Dev Ctr, Agrabad, Chattogram, Bangladesh
[8] Sylhet MAG Osmani Med Coll, Sylhet, Bangladesh
[9] Rangpur Med Coll Hosp, Pediat, Rangpur, Bangladesh
[10] Shaheed Sheikh Abu Naser Specialized Hosp, Neurol, Khulna, Bangladesh
[11] Sher E Bangla Med Coll, Neurol, Barishal, Bangladesh
[12] Rajshahi Med Coll, Neurol, Rajshahi, Bangladesh
[13] Shiga Univ Med Sci, Ctr Epidemiol Res Asia, Otsu, Shiga, Japan
[14] Natl Inst Neurosci & Hosp, Mental & Neurol Study Team, Dhaka, Bangladesh
[15] World Hlth Org, Reg Off South East Asia, New Delhi, India
[16] World Hlth Org Bangladesh, Dhaka, Bangladesh