[1] King Chulalongkorn Mem Hosp KCMH, Dept Ophthalmol, Bangkok, Thailand
[2] Chulalongkorn Univ, Fac Med, Dept Ophthalmol, Bangkok, Thailand
[3] Thai Red Cross Soc, King Chulalongkorn Mem Hosp, Chulalongkorn Ctr Excellence Parkinsons Dis & Rela, Bangkok, Thailand
[4] Thai Red Cross Soc, King Chulalongkorn Mem Hosp, Chula Neurosci Ctr, Bangkok, Thailand
[5] King Chulalongkorn Mem Hosp, Nursing Dept, Bangkok, Thailand
[6] Chulalongkorn Univ, Fac Med, Dept Psychiat, Bangkok, Thailand