Effect of Vitamin D Supplementation on Relapse-Free Survival in Patients With Digestive Tract Cancers

This randomized clinical trial compares the effects of vitamin D supplementation vs placebo on 5-year relapse-free survival after surgical resection of stage I-III esophageal, gastric, small bowel, and colorectal cancers.
Source: JAMA - Category: General Medicine Source Type: research