Sonic Hedgehog pathway activity in prostate cancerBragina, Olga; Njukova, Natalja; Sergejeva, Svetlana; Järvekülg, Lilian; Kogerman, PriitOncology letters2010 / 2, p. 319-325 : ill https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3436354/