there is some compelling data for competing companies expected at AASLD. In particular GILD BMY and perhaps MRK may have early data on viable regimens without ribavirin.I am quite certain you don't need the word 'perhaps' in conjunction with MRK's C-WORTHY (MK-5172 in combination with MK-8742 ± ribavirin) Study data. http://www.natap.org/2013/HCV/100313_01.htm