[1] PC Sint Amandus, Dept Psychiat, Beernem, Belgium
[2] Univ Antwerp Hosp, Dept Ophthalmol, Antwerp, Belgium
[3] Univ Antwerp, Dept Biomed Sci, Inst Born Bunge, Lab Neurochem & Behav, Antwerp, Belgium
[4] Univ Groningen, Dept Neurol, Groningen, Netherlands
[5] Univ Groningen, Alzheimer Res Ctr, Groningen, Netherlands
[6] Univ Med Ctr Groningen, Groningen, Netherlands
[7] Ghent Univ Hosp, Dept Psychiat, Ghent, Belgium
[8] Middelheim Gen Hosp ZNA, Dept Neurol, Antwerp, Belgium
[9] Middelheim Gen Hosp ZNA, Memory Clin, Antwerp, Belgium
[10] Kantonsspital Aarau, Dept Ophthalmol, Aarau, Switzerland