96
Participants
Start Date
January 31, 1993
Primary Completion Date
December 31, 2005
Study Completion Date
December 31, 2005
13-cis retinoic acid
Tocopherol
University of Colorado Cancer Center at University of Colorado Health Sciences Center, Denver
National Jewish Center for Immunology and Respiratory Medicine, Denver
Lung Cancer Institute, Denver
Veterans Affairs Medical Center - Denver, Denver
University of Colorado, Denver
OTHER