“…Regarding the understanding of our flow chart, it is noticeable that the four studies were not “excluded” from the analysis as mentioned in the letter. 1 All the precise details of the inclusions of the articles are given at the beginning of the section Result , sub-section The Steps of Articles Selection Process . 2 We can summarize differently in this response why we mentioned 15 “real” reports of included studies out of 19 included articles.…”