Prostate-specific Membrane Antigen–radioguided Surgery for Metastatic Lymph Nodes in Prostate Cancer - Maurer, T; Weirich, G; Schottelius, M; Weineisen, M; Frisch, B; Okur, A; Kübler, H; Thalgott, M; Navab, N; Schwaiger, M; Wester, H-J; Gschwend, J; Eiber, M (European Urology, 2015)