aluminum
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 metals (manganese, copper, lead, iron, mercury,       zinc,  @SUBJECT$  and others) appears to be a  @PREDICAT$  for  @OBJECT$        (PD) in some, but not all, case-control studies.