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[...]probability testing starts with the assumption that the difference between groups is zero (the null hypothesis). [...]all one can do is determine the probability (P value) that the null hypothesis is true. Author Contributions: All authors confirmed they have contributed to the intellectual content of this paper and have met the following 3 requirements: (a) significant contributions to the conception and design, acquisition of data, or analysis and interpretation of data; (b) drafting or revising the article for intellectual content; and (c) final approval of the published article.