[GILD] Enrolling GT1 patients in the Sofo/Riba study is bizarre. You don't drop clean, synergistic drugs like [GS-5885] you add them. You don't seek out longer durations with less potent combinations. Why not longer durations of Sofo/5885 in GT1? Why not study GT2 patients? Couldn't longer durations in GT2 help boost SVR rates within this genotype?