“…Similarly, eight studies focused on a very specific treatment 20,23,24,31,51,55,56,60 which we considered as not fully representative of our target population. Overall, the duration of follow-up was sufficient but in nine studies the followup rate was less than 90% 24,30,46 or the adequacy of followup was not reported. 27,32,33,56,57,62 There were no other quality concerns.…”