Defining the challenges and opportunities for using patient‐derived models in prostate cancer research by Brennen, WN, Le Magnen, C, Karkampouna, S, Anselmino, N, Bock, N, Choo, N, Clark, AK, Coleman, IM, Dolgos, R, Ferguson, AM, Goode, DL, Krutihof‐de Julio, M, Navone, NM, Nelson, PS, O'Neill, E, Porter, LH, Ranasinghe, W, Sunada, T, Williams, ED, Butler, LM, Corey, E, van Weerden, WM, Taylor, RA, Risbridger, GP