Exclusion of patients with brain metastases from cancer clinical trials. Issue 4 (4th January 2020) - Patel, Roshal R; Verma, Vivek; Miller, Austin B; Lin, Timothy A; Jethanandani, Amit; Espinoza, Andres F; Mainwaring, Walker; Augustyn, Alexander; Fuller, C David; Sulman, Erik P; Yeboa, Debra N; Chung, Caroline C; et al.