Vitamin D supplementation and total cancer incidence and mortality: a meta-analysis of randomized controlled trials
Keum N, et al • Annals of Oncology • 2019
Cancer mortality: 13% reduction (RR 0.87, 95% CI 0.79-0.96, p=0.005); Cancer incidence: no effect (RR 0.98, 95% CI 0.93-1.03, p=0.42)