Goodman GE, Thornquist MD, Balmes J, Cullen MR, Meyskens FL, Omenn GS, et al. (December 2004). "The Beta-Carotene and Retinol Efficacy Trial: incidence of lung cancer and cardiovascular disease mortality during 6-year follow-up after stopping beta-carotene and retinol supplements". Journal of the National Cancer Institute. 96 (23): 1743–1750. doi:10.1093/jnci/djh320. PMID15572756.
Burri BJ, Clifford AJ (October 2004). "Carotenoid and retinoid metabolism: insights from isotope studies". Archives of Biochemistry and Biophysics. Highlight issue on Carotenoids. 430 (1): 110–119. doi:10.1016/j.abb.2004.04.028. PMID15325918.
Burri BJ, Clifford AJ (October 2004). "Carotenoid and retinoid metabolism: insights from isotope studies". Archives of Biochemistry and Biophysics. Highlight issue on Carotenoids. 430 (1): 110–119. doi:10.1016/j.abb.2004.04.028. PMID15325918.
Goodman GE, Thornquist MD, Balmes J, Cullen MR, Meyskens FL, Omenn GS, et al. (December 2004). "The Beta-Carotene and Retinol Efficacy Trial: incidence of lung cancer and cardiovascular disease mortality during 6-year follow-up after stopping beta-carotene and retinol supplements". Journal of the National Cancer Institute. 96 (23): 1743–1750. doi:10.1093/jnci/djh320. PMID15572756.
Alpha-Tocopherol BC (April 1994). "The effect of vitamin E and beta carotene on the incidence of lung cancer and other cancers in male smokers". The New England Journal of Medicine. 330 (15): 1029–1035. doi:10.1056/NEJM199404143301501. PMID8127329.
Sherman SI (March 2003). "Etiology, diagnosis, and treatment recommendations for central hypothyroidism associated with bexarotene therapy for cutaneous T-cell lymphoma". Clinical Lymphoma. 3 (4): 249–252. doi:10.3816/CLM.2003.n.006. PMID12672276.
Goodman GE, Thornquist MD, Balmes J, Cullen MR, Meyskens FL, Omenn GS, et al. (December 2004). "The Beta-Carotene and Retinol Efficacy Trial: incidence of lung cancer and cardiovascular disease mortality during 6-year follow-up after stopping beta-carotene and retinol supplements". Journal of the National Cancer Institute. 96 (23): 1743–1750. doi:10.1093/jnci/djh320. PMID15572756.
Burri BJ, Clifford AJ (October 2004). "Carotenoid and retinoid metabolism: insights from isotope studies". Archives of Biochemistry and Biophysics. Highlight issue on Carotenoids. 430 (1): 110–119. doi:10.1016/j.abb.2004.04.028. PMID15325918.
Burri BJ, Clifford AJ (October 2004). "Carotenoid and retinoid metabolism: insights from isotope studies". Archives of Biochemistry and Biophysics. Highlight issue on Carotenoids. 430 (1): 110–119. doi:10.1016/j.abb.2004.04.028. PMID15325918.
Goodman GE, Thornquist MD, Balmes J, Cullen MR, Meyskens FL, Omenn GS, et al. (December 2004). "The Beta-Carotene and Retinol Efficacy Trial: incidence of lung cancer and cardiovascular disease mortality during 6-year follow-up after stopping beta-carotene and retinol supplements". Journal of the National Cancer Institute. 96 (23): 1743–1750. doi:10.1093/jnci/djh320. PMID15572756.
Alpha-Tocopherol BC (April 1994). "The effect of vitamin E and beta carotene on the incidence of lung cancer and other cancers in male smokers". The New England Journal of Medicine. 330 (15): 1029–1035. doi:10.1056/NEJM199404143301501. PMID8127329.
Sherman SI (March 2003). "Etiology, diagnosis, and treatment recommendations for central hypothyroidism associated with bexarotene therapy for cutaneous T-cell lymphoma". Clinical Lymphoma. 3 (4): 249–252. doi:10.3816/CLM.2003.n.006. PMID12672276.