“…Twelve studies regarding the medical efficacy of combination therapy with interferon plus ribavirin compared to interferon monotherapy were included; herein 2 HTA reports [38], [39] 1 systematic Cochrane review [24], 2 meta-analyses [23], [40] and 7 controlled randomised clinical trials [41], [42], [43], [44], [13], [14], [45]. Two controlled randomised multicentre studies [15], [16] regarding medical efficacy of combination therapy with peginterferon and ribavirin compared to interferon plus ribavirin were identified and included.…”