Inference of the impact of insertion sequence (IS) elements on bacterial genome diversification through analysis of small-size structural polymorphisms in Escherichia coli O157 genomes - Ooka, Tadasuke; Ogura, Yoshitoshi; Asadulghani, Md; Ohnishi, Makoto; Nakayama, Keisuke; Terajima, Jun; Watanabe, Haruo; Hayashi, Tetsuya (Genome Research, 2009)