Immediate or Delayed Nephrectomy in Patients With Metastatic Renal Cancer Who Are Receiving Targeted Agents: Is the Analysis at Risk for Guarantee-Time Bias?
1 Consuelo Buttigliero and Marcello Tucci, University of Turin, San Luigi Gonzaga Hospital, Orbassano, Turin, Italy; and Francesca Vignani and Massimo Di Maio, University of Turin, Mauriziano Hospital, Turin, Italy.