Fig. 2From: High level of circulating vitamin D during neoadjuvant therapy may lower risk of metastatic progression in high-risk rectal cancerBaseline serum level of 25-hydroxyvitamin D [25(OH)D], the time of the year of study enrollment, and tumor (T) stage for each patient. The fit standard curve (solid line) with 95% confidence bands (dashed lines) for the entire study population is shownBack to article page