Papapetropoulos, S;
Katzen, H;
Schrag, A;
Singer, C;
Scanlon, BK;
Nation, D;
Guevara, A;
(2008)
A questionnaire-based (UM-PDHQ) study of hallucinations in Parkinson's disease.
BMC Neurology
, 8
, Article 21. 10.1186/1471-2377-8-21.