NCT00342992 2020-09-09
Alpha-Tocopherol, Beta-Carotene Cancer Prevention (ATBC) Study
National Institutes of Health Clinical Center (CC)
Completed
National Institutes of Health Clinical Center (CC)
National Institutes of Health Clinical Center (CC)
National Institutes of Health Clinical Center (CC)
National Institutes of Health Clinical Center (CC)
National Institutes of Health Clinical Center (CC)