e lesion sequencing provides insights into tumor evolution. P Natl Acad Sci USA 105: 4283-4288. Page 9 of 16 EFTA_R1_01519433 EFTA02443867 209. Langer P, MA Nowak, C Hauert (2008). Spatial invasion of cooperation. J theor Biol 250: 634-641. 210. Michel 1B, P1 Yeh, R Chait, RC Moellering, R Kishony (