A randomized phase II chemoprevention trial of 13-CIS retinoic acid with or without alpha tocopherol or observation in subjects at high risk for lung cancer.
Kelly K, Kittelson J, Franklin WA, Kennedy TC, Klein CE, Keith RL, Dempsey EC, Lewis M, Jackson MK, Hirsch FR, Bunn PA, Miller YE. A randomized phase II chemoprevention trial of 13-CIS retinoic acid with or without alpha tocopherol or observation in subjects at high risk for lung cancer. Cancer Prev Res (Phila). 2009 May; 2(5):440-9.