DNA was extracted from the blood drawn from 399 prostate cancer patients , 150 BPH patients and 294 healthy community controls .
O O O O O O O O O B-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature B-OrganismTaxon O O B-DiseaseOrPhenotypicFeature B-OrganismTaxon O O O O O O