Key points are not available for this paper at this time.
Following the publication of this article, the authors have realized that Table I was not included with the printed version of the article, although it was referenced in the text. Subsequently, it has been determined that a processing error or oversight must have been made during the pre-press stages. Table I, as it should have appeared in this paper, is shown in the next page. We apologize to the authors for this omission, and regret the inconvenience that this has caused.the original article was published in International Journal of Oncology 52: 1603-1612, 2018; DOI: 10.3892/ijo.2018.4313.
Thomas S. Kuhn (Tue,) studied this question.