Effects of Serum Levels of Vitamin A and Its Precursors on Colorectal Cancer Mortality: An 18-Year Follow-Up Study of a National Cohort

Evans Afriyie-Gyawu, Titilope Ogunleke, Chimuanya Okoli, Jian Zhang

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Medicine and Dentistry

Nursing and Health Professions

Biochemistry, Genetics and Molecular Biology

Immunology and Microbiology

Pharmacology, Toxicology and Pharmaceutical Science