NIAGARA FALLS -- Former residents of Love Canal are back in the Niagara Falls neighborhood, 30 years after fleeing toxic pollution.

They expect results of a long-term state health study sometime this year, but are already saying it will be incomplete.

The residents, led by housewife turned activist Lois Gibbs, say many people were excluded from the study and so their cancers, birth defects and other problems were not counted. State health officials have defended the methods behind the study after previous criticism.

It was the Love Canal crisis -- pollution from years of chemical dumping in the neighborhood -- that launched the federal Superfund cleanup program.

The Love Canal activists are meeting Friday with public officials to discuss other current pollution issues.