title: Enrollment begins for largest-ever prostate cancer prevention trial.
authors.forename: M
authors.initials: M
authors.lastname: Miller
mesh_terms: D002170:Canada; D002986:Clinical Trials as Topic; D006801:Humans; D008297:Male; D015337:Multicenter Studies as Topic; D011471:Prostatic Neoplasms / Q000517:prevention & control*; D011647:Puerto Rico; D012643:Selenium / Q000627:therapeutic use*; D014481:United States; D014810:Vitamin E / Q000627:therapeutic use*
chemical_list: D014810:Vitamin E; D012643:Selenium