Season of diagnosis is a predictor of cancer survival. Sun-induced vitamin D may be involved: A possible role of sun-induced Vitamin D

Porojnicu A, Robsahm TE, Berg JP, Moan J. Season of diagnosis is a predictor of cancer survival. Sun-induced vitamin D may be involved: A possible role of sun-induced Vitamin D. J Steroid Biochem Mol Biol 2007; 55(3-5):675-678.