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RECRUITMENT FOR THE BETA-CAROTENE AND RETINOL EFFICACY TRIAL (CARET) TO PREVENT LUNG-CANCER IN SMOKERS AND ASBESTOS-EXPOSED WORKERS WESTERN JOURNAL OF MEDICINE Omenn, G. S., Goodman, G., Grizzle, J., Thornquist, M., Rosenstock, L., Barnhart, S., Anderson, G., Balmes, J., Cone, J., Cherniack, M., Cullen, M., Glass, A., Valanis, B., Keogh, J., Meyskens, F., Williams, J. 1992; 156 (5): 540-544
View details for Web of Science ID A1992HU80900013
View details for PubMedID 1595284