Task: Information Extraction
Input (English): Subjects were randomly divided in two groups : supplementation ( n 11 ) with 100 mg dl-alpha-tocopheryl acetate , 200 mg ascorbic acid , and 2 mg beta-carotene , and placebo ( n 9 ) .
Output (English): dl-alpha-tocopheryl acetate, ascorbic, beta-carotene, placebo