The ERCC1/XPF endonuclease is required for completion of homologous recombination at DNA replication forks stalled by inter-strand cross-links by Al-Minawi, A, Lee, Y, Håkansson, D, Johansson, F, Lundin, C, Saleh-Gohari, N, Schultz, N, Jenssen, D, Bryant, H, Meuth, M, Hinz, J, Helleday, T