Vitamin D insufficiency increases risk of chronic pain among African Americans experiencing motor vehicle collision. - Mauck, Matthew C.; Linnstaedt, Sarah D.; Bortsov, Andrey; Kurz, Michael; Hendry, Phyllis L.; Lewandowski, Christopher; Velilla, Marc-Anthony; Datner, Elizabeth; Pearson, Claire; Domeier, Robert; Fillingim, Roger B.; Beaudoin, Francesca L.; et al. (PAIN, 2020)