https://www.selleckchem.com/pr....oducts/Gefitinib.htm
Over the last several decades, extensive research on vitamin D and its role on cancer incidence, cancer survival (survival or mortality from cancer among individuals diagnosed with cancer), and cancer mortality (fatal cases occurring during the study period in an initially cancer-free population) has been conducted. A variety of study designs were implemented to explore vitamin D status, assessed by measuring sun exposure, vitamin D intake, and circulating 25-hydroxyvitamin D (25(OH)D) concentration. Although not many randomized contr
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