Go, no-go decision making for phase 3 clinical trials: ACT IV revisited – Authors' reply. Issue 2 (December 2017) - Weller, Michael; Butowski, Nicholas; Tran, David D; Recht, Lawrence D; Lim, Michael; Hirte, Hal; Ashby, Lynn; Mechtler, Laszlo; Goldlust, Samuel A; Iwamoto, Fabio; Drappatz, Jan; O'Rourke, Donald M; et al.