eration and bifurcation. Theor Popul Biol 73: 257-263. 208. Jones S, W Chen, G Parmigiani, F Diehl, N Beerenwinkel, T Antal, A Traulsen, MA Nowak, C Siegel, VE Velculescu, KW Kinzler, B Vogelstein, J Willis, SD Markowitz (2008). Comparative lesion sequencing provides insights into tumor evolution. P Nat