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Occurrence of one‐cell ICSI embryos with structural chromosome aberrations when mature spermatozoa from the cauda epididymis were incubated in five different media for various times before ICSI. Number of embryos analyzed is indicated in parentheses. Statistical significance compared to IVF embryos (2.3%) is shown by a (P < 0.05), b (P < 0.01) and c (P < 0.001) (Chi‐square test)
