manganese
Occupational exposure to specific metals (manganese, copper, lead, iron, mercury,       zinc, aluminum and others) appears to be a risk factor for Parkinson's disease       (PD) in some, but not all, case-control studies.
Occupational exposure to specific  @OBJECT$  @PREDICAT$  @SUBJECT$ , copper, lead, iron, mercury,       zinc, aluminum and others) appears to be a risk factor for Parkinson's disease       (PD) in some, but not all, case-control studies.