The prime-to-p part of \'etale fundamental groups of curves
  The previous version of this paper relied on a paper by another author whose proof appears to be invalid in a fundamental way. In arXiv:1707.00649 the author, together with Jeff Yelton, came up with a new proof of almost identical results. (See Remark 1.4 of arXiv:1707.00649.) 
Hilaf Hasson
math.AG math.NT